Boot failure - after troubleshooting advice


This is a follow-on from the previous thread

Although the rear recovery environment worked initially, on a subsequent test restore, the recovery environment failed to load.

I have tried connecting the USB disk to a working system and using gparted to check the partition on the EFI Partition. Unfortunately, this didn’t make any difference.

This is what I’m seeing when the startup fails

Any thoughts?


I have found this

But not sure how I get to a position where I can try this

I’ve also tried playing around with grub

ls (hd0,gpt1)/efi/boot

displays the following files
BOOTX64.efi kernel initrd.cgz grub.cfg

I’ve worked this out

  • the boot partition needs to be fat, rather than fat32
  • use rear mkrescue
  • can only have one disk attached to the system when using rear mkrescue