[bug #45711] grub-mkrescue sets invalid prefix.

[Nathan]

URL:
  <http://savannah.gnu.org/bugs/?45711>

                 Summary: grub-mkrescue sets invalid prefix.
                 Project: GNU GRUB
            Submitted by: nemasu
            Submitted on: Fri 07 Aug 2015 05:56:45 AM GMT
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: Git master
         Reproducibility: Every Time
         Planned Release: None

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Details:

grub-mkrecsue with default options produces an invalid prefix: "()/boot/grub".
This causes you to be forced into grub rescue mode when booting in EFI mode.

I used the following command:
grub-mkrescue -o new_disk.iso iso_fs

And in the logs, it used this command for grub-mkimage:

grub-mkrescue: info: grub-mkimage --directory '/usr/lib/grub/x86_64-efi'
--prefix '()/boot/grub' --output '/tmp/grub.bSZQKT/efi/boot/bootx64.efi'
--format 'x86_64-efi' --compression 'auto'  --config '/tmp/grub.5Bat9U'
'part_gpt' 'part_msdos' 'part_apple' 'iso9660' 





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