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Re: apt-cdrom: How do I use the flash drive as a CD-ROM to install software in Debian 12?



On Thu 15 Jun 2023 at 21:32:41 (+0000), Totoro wrote:

> After entering
> 
> sudo apt update
> 
> The following messages appeared on the console:
> 
> Ign:1 cdrom://[Debian GNU/Linux 12.0.0 _Bookworm_ - Official amd64 DVD Binary-1 with firmware 20230610-10:23"] bookworm InRelease
> Err:2 cdrom://[Debian GNU/Linux 12.0.0 _Bookworm_ - Official amd64 DVD Binary-1 with firmware 20230610-10:23"] bookworm Release
> Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs.
> Reading package lists.....Done
> 
> E: The repository 'cdrom://[Debian GNU/Linux 12.0.0 _Bookworm_ - Official amd64 DVD Binary-1 with firmware 20230610-10:23"] bookworm 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.
> 
> I have read the manpages of both 'apt-cdrom' and 'apt-secure' and they only contain lists and descriptions of options and parameters. They do not contain examples on how to use the options.
> 
> My objective is to mount the flash drive as a CD-ROM and use it to install additional software. 

It looks as though you haven't added an entry in /etc/apt/sources.list
(or a file in its directory) for reading from the mounted stick.
Something like:

  deb file:/mnt/mount-iso bookworm main non-free contrib non-free-firmware

See   man sources.list

Cheers,
David.


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