Where does apt-cdrom put the release file?
Please help me use DVDs to install additional packages. I can do a clean
install from DVDs, but not add additional packages. 'apt update' says it
disables the DVDs because it cannot find their release files.
My understanding, the purpose of 'apt-cdrom' is to save summary
information from the DVD (or whatever removeable media) to your hard
drive, so you do not have to mount every DVD every time you run 'apt
update'. However, something seems to be haywire on my computer. Either
apt-cdrom is not saving the DVD's release file, or apt doesn't know where
to find it.
I understand I can prevent apt from checking the release file by adding
'trusted=yes' to each DVD's entry in the sources.list file. However, the
manpage for apt-security warns they will eventually plug this loophole.
In pursuit of a long-term fix, I thought the first thing to do was to
figure out where the release files should be on my hard drive. Can anyone
point me in the right direction?
--------------------------
More detail:
I am running Debian stable, 10.9. amd-64. Pretty much the standard desktop
configuration except I use xfce.
Below are the messages 'apt update' outputs. To make the list of messages
shorter and less confusing, I made sure there would only be one DVD for
'apt update' to complain about. I did this by first manually editing the
sources.list file to have only one entry: the official security
repository. Then I ran 'apt-cdrom add' to add one DVD. Then ran:
root@penguin:~# apt update
Ign:1 cdrom://[Debian GNU/Linux 10.9.0 _Buster_ - Official amd64 DVD
Binary-2 20210327-10:39] buster InRelease
Err:2 cdrom://[Debian GNU/Linux 10.9.0 _Buster_ - Official amd64 DVD
Binary-2 20210327-10:39] buster Release
Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get
update cannot be used to add new CD-ROMs
Hit:3 http://security.debian.org/debian-security buster/updates
InRelease
Reading package lists... Done
E: The repository 'cdrom://[Debian GNU/Linux 10.9.0 _Buster_ - Official
amd64 DVD Binary-2 20210327-10:39] buster Release' does not have a Release
file.
N: Updating from such a repository can't be done securely, and is
therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user
configuration details.
Reply to: