無料で使えるOS「Ubuntu」を活用すれば、Windows 11のシステム要件を満たさない旧型PCも、最新の環境で再活用できる可能性があります。
The traditional approach has a lot of potential problems.
Besides the bootloader, the only other obvious thing is changing /etc/fstab. Although a 'grep -r sda1 /etc/*' (or whatever the USB device name is) wouldn't be a bad idea.