[Bug 1017542] Re: grub2 update-grub puts wrong UUID in grub.cfg for system with separate /, /boot partitions when detected by os-prober

[keepitsimpleengr]

I also note that the root partition on the drive which the failed boot
occurs changes from (hd7,2) to (hd6,2) when the usb back-up volume is
removed.

With USB:

menuentry "Arch ⁛ Linux (on /dev/sdh2)" --class gnu-linux --class gnu --class os {
	savedefault
	insmod part_msdos
	insmod ext2
	set root='(hd7,msdos1)'
	search --no-floppy --fs-uuid --set=root 3b93366a-5715-4841-aa52-1567a9877fb9
	linux /vmlinuz-linux root=/dev/sda2 ro
	initrd /initramfs-linux.img
}

Without USB:

menuentry "Arch Linux (on /dev/sdg2)" --class gnu-linux --class gnu --class os {
	savedefault
	insmod part_msdos
	insmod ext2
	set root='(hd6,msdos1)'
	search --no-floppy --fs-uuid --set=root 3b93366a-5715-4841-aa52-1567a9877fb9
	linux /vmlinuz-linux root=/dev/sda2 ro
	initrd /initramfs-linux.img
}

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to os-prober in Ubuntu.
https://bugs.launchpad.net/bugs/1017542

Title:
  grub2 update-grub puts wrong UUID in grub.cfg for system with separate
  /, /boot  partitions when detected by os-prober

Status in “os-prober” package in Ubuntu:
  New

Bug description:
  It is putting in the UUID for the boot partition and not the / (root)
  partition.

  It's grub2 (1.99-21ubuntu3.1) on Xubuntu 12.04.

   I ran Boot Info Script 0.60, results are attached⋯

  The system not booting is on /dev/sdh.  The booting disk, Xubuntu
  12.04, is /dev/sdb.

  sdh2/etc/fstab is at line 1073.

  The incorrect UUIDs are at line 945 and 954.

  "blkid" putput is at line 318.

  It is putting the UUID for "boot" versus "root" in boot.cfg, line 937.

  I have noticed that the relationship between physical drives and names
  in /dev vary depending on which system is booted.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: grub (not installed)
  ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
  Uname: Linux 3.2.0-25-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: amd64
  Date: Mon Jun 25 07:50:56 2012
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub
  UpgradeStatus: Upgraded to precise on 2012-06-15 (10 days ago)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/os-prober/+bug/1017542/+subscriptions