Assuming you are installing on a 64bit PC, and that I read the docs correctly. Install "debmirror" Mount destination USB drive (2TB is ideal) to "/mnt/" run the following command debmirror --arch=amd64 –method=http –host=deb.debian.org –root=debian –dist=trixie,trixie-updates –section=main,contrib,non-free,non-free-firmware –nosource /mnt/ That should work. Give it a test drive before committing to an all night archiving.