I'm running Ubuntu Studio 22.04 dual-booted with Windows 11, and I want to add an SD card with FydeOS to my GRUB menu... The issue is I don't know how...
I've tried adding /dev/sda to the bootloader through grub editor, but nothing new shows.
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1You can add a grub entry to boot the other OS (*make the change on Ubuntu Studio 22.04 LTS if it controls your booting*) via either `chainloader` (*if you're going to use the other OSes boot loader, or as per duplicate*) or create an entry to boot the OS directly (*this method will differ, but I don't know FydeOS as it's not Ubuntu, nor on-topic here, thus don't know how it would appear as entries can vary for GNU/Linux, BSD, windows, MacOS etc*) – guiverc Oct 05 '22 at 10:44
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Install the OS to USB, Copy it's grub menuentry to Ubuntu Studio's grub.cfg. – C.S.Cameron Oct 05 '22 at 18:09