

What you’re planning seems plausible.
You could also resize the partition on (1) to fit on (2), then dd if=(1) of=(2)
If you’re interested in structural changes that make this sort of thing easier in the future, look into
- ZFS or Btrfs for flexible handling of subvolumes
- NixOS or GUIX for applying system configuration across machines














The partition containing the files may be mounted readonly. Check
less /etc/mtabfor anrooption on that entry.