bugGNU GRUB - Bugs: bug #63030, Different partition grub entries...

 
 

You are not allowed to post comments on this tracker with your current authentication level.

bug #63030: Different partition grub entries get identical root=UUID=sameuuid

Submitter:  Reik Red <reikred>
Submitted:  Thu 08 Sep 2022 02:03:44 AM UTC
   
 
Category:  Configuration Severity:  Major
Priority:  5 - Normal Item Group:  Software Error
Status:  None Privacy:  Public
Assigned to:  None Originator Name: 
Open/Closed:  Open Release:  other
Release:  Reproducibility:  None
Planned Release:  None

Thu 29 Dec 2022 06:31:04 AM UTC, comment #3: 

This effects me as well. I have two Ubuntus (1804 and 2204) on the same hard drive.

 Balazs Vinarz <vinibali>
Thu 29 Dec 2022 06:30:47 AM UTC, comment #2: 

This effects me as well. I have two Ubuntus (1804 and 2204) on the same hard drive.

 Balazs Vinarz <vinibali>
Fri 09 Sep 2022 07:08:41 PM UTC, comment #1: 

I also posted this bug on superuser.com. Please read it because I improved the description a bit there, since I could edit it after posting.


grub-mkconfig generates errant grub.cfg that boots the wrong partition (UUID)

https://superuser.com/questions/1740284/grgrub-mkconfig-generates-errant-grub-cfg-that-boots-the-wrong-partition-uuid

 Reik Red <reikred>
Thu 08 Sep 2022 02:03:44 AM UTC, original submission:  

I have 3 versions of Ubuntu (20,21,22) installed on my machine, but when I select to boot 20 or 21 it still boots 22! The reason turns out to be that ALL the entries in grub.cfg have the same UUID specified:

linux .... root=UUID=....ddde

But the ....ddde partition is the one that contains Ubuntu 22.04. The grub menu shows an entry as Ubuntu 21.04 (or 20.04.3), but grub still boots Ubuntu 22.04 from that entry because the wrong UUID is being used.

Running update-grub and/or grub-mkconfig is what produces the errant grub.cfg file. And I don't understand why this is happening.

grub-mkconfig is reporting sensible findings, such as

Found Ubuntu 20.04.3 LTS (20.04) on /dev/sda3
Found Ubuntu 21.04 (21.04) on /dev/sda4

(this is of course grub2, which is called just grub for several years now)

Added: output of sudo blkid /dev/sda*. It seems normal, the UUID are all different.

sudo blkid /dev/sda*
/dev/sda: PTUUID="5adeb302-3e17-421e-aabc-41bb2377a86f" PTTYPE="gpt"
/dev/sda1: LABEL_FATBOOT="EASY2BOOT" LABEL="EASY2BOOT" UUID="3C18-9DDC" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="Microsoft basic data" PARTUUID="2d2d85db-6382-43f5-9166-1d31da742e06"
/dev/sda2: LABEL="X.SSD./root-ub22" UUID="8d66f7b3-dc29-40b1-b0f0-06105da0ddde" BLOCK_SIZE="4096" TYPE="ext4" PTTYPE="dos" PARTLABEL="Linux filesystem" PARTUUID="c5a10849-2f94-4917-9e56-cc5e594da0ee"
/dev/sda3: LABEL="X.SSD./root-ub21" UUID="d92b1ba1-ede6-4ba4-8f43-cfd7b89d4157" BLOCK_SIZE="4096" TYPE="ext4" PTTYPE="dos" PARTLABEL="Linux filesystem" PARTUUID="27fdc527-1e9b-4b77-a49e-dd92299b2ec7"
/dev/sda4: LABEL="X.SSD./root-ub20" UUID="4cc88374-3255-475b-be75-59ab2c462934" BLOCK_SIZE="4096" TYPE="ext4" PTTYPE="dos" PARTUUID="a2aeaf9e-4ecc-473e-8c8e-e82e16dc7846"
/dev/sda5: UUID="1D3E-50B4" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="4cc2c6b3-9678-4819-a18a-139ceecebb94"

This bug might be easier to debug if grub-mkconfig had a verbose mode that would report how the UUID was determined, and/or an option to generate a menu item for just a list of partitions, say something like

grub-mkconfig -o grub.cfg.debug /dev/sda2 /dev/sda3

Version: grub-2.06



Reik Red <reikred>

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

No files currently attached

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -email is unavailable- added by vinibali (Posted a comment)
  • -email is unavailable- added by reikred (Submitted the item)

    •  

    There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.

     

    No changes have been made to this item

    Back to the top

    Copyright © 2024 Free Software Foundation, Inc.
    Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.
    The Levitating, Meditating, Flute-playing Gnu logo is a GNU GPL'ed image provided by the Nevrax Design Team.
    Page source code

    Powered by Savane 3.13-8ccc.
    Corresponding source code