I wish for an easy peasy way to create a workable bootable rescue cd for use with our first UEFI based laptop. Not boot repair disc(k) In the past, for Bios based systems it was easy, please refer Mrk's grub2 tutorial Here for the details near the end. No messy chrooting was required. Now of course things have changed, grub.cfg seems to be all over the place. I am looking for something similar to this :- configfile (hd0,gpt1)/EFI/ubuntu/grub.cfg which I saw Here.The last comment but nobody voted it 'up'. Have tried from a live cd's grub commandline after changing the partition to gpt2. (There is still a Windows bootloader present shown as gpt1 - I of course did wipe Windows completely). Anyway no luck as yet after fiddling with changing the paths. Maybe I missed something.