[bug #64821] grub-install reports "error: unknown filesystem."

[Steve]

URL:
  <https://savannah.gnu.org/bugs/?64821>

                 Summary: grub-install reports  "error: unknown filesystem."
                   Group: GNU GRUB
               Submitter: greatsun
               Submitted: Thu 26 Oct 2023 03:57:08 PM UTC
                Category: Installation
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: other
                 Release: 
         Discussion Lock: Any
         Reproducibility: Every Time
         Planned Release: None


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Follow-up Comments:


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Date: Thu 26 Oct 2023 03:57:08 PM UTC By: Steve <greatsun>
Hi all,

following base of the issue was found:

Basic setup/situation:
1. A computer installed with Windows 11 Pro before, UEFI boot
2. Booting from Debian 12 and running installation
3. When getting to grub-installation the error occured

Error source:
For me it looks like it tries to look into the other "registered" items in the
EFI BOOT and looks into the boot/configured devices for those somehow. As it
is not able to find the proper devices/partitions with the defined
filesystems, it errors as described.

Solution (for me):
Delete the Windows files from EFI directory.
Afterwards everything runs smoothly.

Fix Suggestion (could also be done differently for sure):
If probing for other OSs and issues found, don't stop execution and if
possible name a proper error.


Hope this helps.







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