当使用 `.iso` 作为 debian 10 repo 时，`Package'' 没有安装候选项
`Package '' has no installation candidate` when use `.iso` as debian 10 repo
阅读有关如何在 debian 系统中使用 iso 作为 repo 的帖子，如 ,2,3。
首先，我从debian 10官方网站下载了3张dvd .iso。
那么，
mkdir /media/cdrom1 /media/cdrom2 /media/cdrom3
mount -t iso9660 -o loop /home/mypc/Downloads/debian-10.9.0-amd64-DVD-1.256.c923fd.iso /media/cdrom1
apt-cdrom --no-mount -d=/media/cdrom1 add
mount -t iso9660 -o loop /home/mypc/Downloads/debian-10.9.0-amd64-DVD-2.256.b6990d.iso /media/cdrom2
apt-cdrom --no-mount -d=/media/cdrom2 add
mount -t iso9660 -o loop /home/mypc/Downloads/debian-10.9.0-amd64-DVD-3.256.6746e3.iso /media/cdrom3
apt-cdrom --no-mount -d=/media/cdrom3 add
此外，vi /etc/apt/sources.list
deb [trusted=yes] file:///media/cdrom1 buster contrib main
deb [trusted=yes] file:///media/cdrom2 buster contrib main
deb [trusted=yes] file:///media/cdrom3 buster contrib main
和apt-get update，输出如下：
root@hp840:/home/mypc# apt-get update
Get:1 file:/media/cdrom1 buster InRelease
Ign:1 file:/media/cdrom1 buster InRelease
Get:2 file:/media/cdrom2 buster InRelease
Ign:2 file:/media/cdrom2 buster InRelease
Get:3 file:/media/cdrom3 buster InRelease
Ign:3 file:/media/cdrom3 buster InRelease
Get:4 file:/media/cdrom1 buster Release
Ign:4 file:/media/cdrom1 buster Release
Get:5 file:/media/cdrom2 buster Release
Ign:5 file:/media/cdrom2 buster Release
Get:6 file:/media/cdrom3 buster Release
Ign:6 file:/media/cdrom3 buster Release
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Err:8 file:/media/cdrom1 buster/contrib amd64 Packages
File not found - /media/cdrom1/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Err:16 file:/media/cdrom2 buster/contrib amd64 Packages
File not found - /media/cdrom2/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Err:23 file:/media/cdrom3 buster/contrib amd64 Packages
File not found - /media/cdrom3/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Reading package lists... Done
E: Failed to fetch file:/media/cdrom1/dists/buster/contrib/binary-amd64/Packages File not found - /media/cdrom1/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
E: Failed to fetch file:/media/cdrom2/dists/buster/contrib/binary-amd64/Packages File not found - /media/cdrom2/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
E: Failed to fetch file:/media/cdrom3/dists/buster/contrib/binary-amd64/Packages File not found - /media/cdrom3/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
E: Some index files failed to download. They have been ignored, or old ones used instead.
最后，
root@hp840:/home/mypc# apt-get install aide
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package aide is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'aide' has no installation candidate
使用 .iso 作为 debian 10 存储库时有什么问题？
提前致谢。
File not found - /media/cdrom1/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
您需要从 /etc/apt/sources.list 中删除 contrib 组件：
deb [trusted=yes] file:///media/cdrom1 buster main
deb [trusted=yes] file:///media/cdrom2 buster main
deb [trusted=yes] file:///media/cdrom3 buster main
Debian DVD 仅包含免费软件。
要安装 aide 包，您需要将 debian-10.9.0-amd64-DVD-6 添加到 sources.list。
debian-10.9.0-amd64-DVD-6 is available here, it can be downloaded through jidgo. See Downloading Debian CD images with jigdo.
要了解 Debian DVD 的内容，您需要下载并解压缩 *.list.gz file from here。每个文件都会给出每个 Debian ISO 中包含的软件包列表。
阅读有关如何在 debian 系统中使用 iso 作为 repo 的帖子，如
首先，我从debian 10官方网站下载了3张dvd .iso。
那么，
mkdir /media/cdrom1 /media/cdrom2 /media/cdrom3
mount -t iso9660 -o loop /home/mypc/Downloads/debian-10.9.0-amd64-DVD-1.256.c923fd.iso /media/cdrom1
apt-cdrom --no-mount -d=/media/cdrom1 add
mount -t iso9660 -o loop /home/mypc/Downloads/debian-10.9.0-amd64-DVD-2.256.b6990d.iso /media/cdrom2
apt-cdrom --no-mount -d=/media/cdrom2 add
mount -t iso9660 -o loop /home/mypc/Downloads/debian-10.9.0-amd64-DVD-3.256.6746e3.iso /media/cdrom3
apt-cdrom --no-mount -d=/media/cdrom3 add
此外，vi /etc/apt/sources.list
deb [trusted=yes] file:///media/cdrom1 buster contrib main
deb [trusted=yes] file:///media/cdrom2 buster contrib main
deb [trusted=yes] file:///media/cdrom3 buster contrib main
和apt-get update，输出如下：
root@hp840:/home/mypc# apt-get update
Get:1 file:/media/cdrom1 buster InRelease
Ign:1 file:/media/cdrom1 buster InRelease
Get:2 file:/media/cdrom2 buster InRelease
Ign:2 file:/media/cdrom2 buster InRelease
Get:3 file:/media/cdrom3 buster InRelease
Ign:3 file:/media/cdrom3 buster InRelease
Get:4 file:/media/cdrom1 buster Release
Ign:4 file:/media/cdrom1 buster Release
Get:5 file:/media/cdrom2 buster Release
Ign:5 file:/media/cdrom2 buster Release
Get:6 file:/media/cdrom3 buster Release
Ign:6 file:/media/cdrom3 buster Release
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Ign:8 file:/media/cdrom1 buster/contrib amd64 Packages
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:10 file:/media/cdrom1 buster/contrib Translation-en_US
Ign:10 file:/media/cdrom1 buster/contrib Translation-en_US
Get:11 file:/media/cdrom1 buster/main all Packages
Ign:11 file:/media/cdrom1 buster/main all Packages
Get:12 file:/media/cdrom1 buster/main amd64 Packages
Ign:12 file:/media/cdrom1 buster/main amd64 Packages
Get:13 file:/media/cdrom1 buster/main Translation-en_US
Ign:13 file:/media/cdrom1 buster/main Translation-en_US
Get:14 file:/media/cdrom1 buster/main Translation-en
Ign:14 file:/media/cdrom1 buster/main Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Ign:16 file:/media/cdrom2 buster/contrib amd64 Packages
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:18 file:/media/cdrom2 buster/contrib Translation-en
Ign:18 file:/media/cdrom2 buster/contrib Translation-en
Get:19 file:/media/cdrom2 buster/main amd64 Packages
Ign:19 file:/media/cdrom2 buster/main amd64 Packages
Get:20 file:/media/cdrom2 buster/main all Packages
Ign:20 file:/media/cdrom2 buster/main all Packages
Get:21 file:/media/cdrom2 buster/main Translation-en
Ign:21 file:/media/cdrom2 buster/main Translation-en
Get:22 file:/media/cdrom2 buster/main Translation-en_US
Ign:22 file:/media/cdrom2 buster/main Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Ign:23 file:/media/cdrom3 buster/contrib amd64 Packages
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Get:25 file:/media/cdrom3 buster/contrib Translation-en
Ign:25 file:/media/cdrom3 buster/contrib Translation-en
Get:26 file:/media/cdrom3 buster/contrib Translation-en_US
Ign:26 file:/media/cdrom3 buster/contrib Translation-en_US
Get:27 file:/media/cdrom3 buster/main amd64 Packages
Ign:27 file:/media/cdrom3 buster/main amd64 Packages
Get:28 file:/media/cdrom3 buster/main all Packages
Ign:28 file:/media/cdrom3 buster/main all Packages
Get:29 file:/media/cdrom3 buster/main Translation-en_US
Ign:29 file:/media/cdrom3 buster/main Translation-en_US
Get:30 file:/media/cdrom3 buster/main Translation-en
Ign:30 file:/media/cdrom3 buster/main Translation-en
Get:7 file:/media/cdrom1 buster/contrib all Packages
Ign:7 file:/media/cdrom1 buster/contrib all Packages
Get:8 file:/media/cdrom1 buster/contrib amd64 Packages
Err:8 file:/media/cdrom1 buster/contrib amd64 Packages
File not found - /media/cdrom1/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
Get:9 file:/media/cdrom1 buster/contrib Translation-en
Ign:9 file:/media/cdrom1 buster/contrib Translation-en
Get:15 file:/media/cdrom2 buster/contrib all Packages
Ign:15 file:/media/cdrom2 buster/contrib all Packages
Get:16 file:/media/cdrom2 buster/contrib amd64 Packages
Err:16 file:/media/cdrom2 buster/contrib amd64 Packages
File not found - /media/cdrom2/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
Get:17 file:/media/cdrom2 buster/contrib Translation-en_US
Ign:17 file:/media/cdrom2 buster/contrib Translation-en_US
Get:23 file:/media/cdrom3 buster/contrib amd64 Packages
Err:23 file:/media/cdrom3 buster/contrib amd64 Packages
File not found - /media/cdrom3/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
Get:24 file:/media/cdrom3 buster/contrib all Packages
Ign:24 file:/media/cdrom3 buster/contrib all Packages
Reading package lists... Done
E: Failed to fetch file:/media/cdrom1/dists/buster/contrib/binary-amd64/Packages File not found - /media/cdrom1/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
E: Failed to fetch file:/media/cdrom2/dists/buster/contrib/binary-amd64/Packages File not found - /media/cdrom2/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
E: Failed to fetch file:/media/cdrom3/dists/buster/contrib/binary-amd64/Packages File not found - /media/cdrom3/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
E: Some index files failed to download. They have been ignored, or old ones used instead.
最后，
root@hp840:/home/mypc# apt-get install aide
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package aide is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'aide' has no installation candidate
使用 .iso 作为 debian 10 存储库时有什么问题？
提前致谢。
File not found - /media/cdrom1/dists/buster/contrib/binary-amd64/Packages (2: No such file or directory)
您需要从 /etc/apt/sources.list 中删除 contrib 组件：
deb [trusted=yes] file:///media/cdrom1 buster main
deb [trusted=yes] file:///media/cdrom2 buster main
deb [trusted=yes] file:///media/cdrom3 buster main
Debian DVD 仅包含免费软件。
要安装 aide 包，您需要将 debian-10.9.0-amd64-DVD-6 添加到 sources.list。
debian-10.9.0-amd64-DVD-6 is available here, it can be downloaded through jidgo. See Downloading Debian CD images with jigdo.
要了解 Debian DVD 的内容，您需要下载并解压缩 *.list.gz file from here。每个文件都会给出每个 Debian ISO 中包含的软件包列表。