[bug #56546] Allow root=PARTUUID when no initrd is provided

[Mike Lothian]

URL:
  <https://savannah.gnu.org/bugs/?56546>

                 Summary: Allow root=PARTUUID when no initrd is provided
                 Project: GNU GRUB
            Submitted by: fireburn
            Submitted on: Tue 25 Jun 2019 03:37:46 PM UTC
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 
                 Release: 2.02
         Reproducibility: None
         Planned Release: None

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Details:

I had to alter /etc/grub.d/10_linux to allow setting root=PARTUUID= which was
always been overridden by root=/dev/sdX 

HyperV doesn't always allocate the disks in the same order during boot, and
using the PARTUUID works around this issue

Would it be possible to change the 10_linux file to make it easier to do this
- or even use that by default when an initrd isn't being used 




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