Hi all. I'm having a problem with os-prober not finding other linux partitions.
I'm on x86_64 and an old spinning drive with an msdos partition table and 4 primary partitions, 3 linux and 1 swap. os-prober runs successfully as per bash's return code, but no partitions are found. grub (grub2) is built with the 'mount' use flag, and when 'grub-mkconfig -o /boot/grub/grub.cfg' is run, the result is the same, i.e., the gentoo partition is found but no others. Any suggestions on where to check from here?
