Hi Nathan, Nathan Dehnel writes: > This config results in grub rescue "unknown filesystem btrfs rootfs>" when I try to boot it. I have verified that all the > device uuids are correct, and the bootloader, mapped-devices, and > file-systems sections are identical in form to my other system which > boots fine. i can mount the boot partition and unlock and mount the > root partition manually, so they're not broken. I have no idea why > it's not working. My guess is that reconfigure is broken inside a > chroot somehow. I see you're using LUKS. Is it LUKS1 or LUKS2? LUKS2 unfortunately doesn't work at present, because we're still on Grub 2.06. Best, -- Josselin Poiret