I'm trying to install packages on Debian from the insaller CD/DVD Iso file. Now, i will give information about what i done.
1. I created mountpoint to mount the ISO file.
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sudo mkdir -p /mnt/mount-iso
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sudo mount /path/isopath /mnt/mount-iso
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deb [trusted=yes] file:///mnt/mount-iso bullseye main contrib
I installed some packages like git, gparted. So far everything is working fine. But when i try to install
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sudo apt-get install linux-image-rt-amd64
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Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package linux-image-rt-amd64
Here is my output of lsb_release -a command
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Distributor ID: Debian
Description: Debian GNU/Linux 11 (bullseye)
Release: 11
Codename: bullseye
I tried many things on the internet but it didn't work.