[Bug 1038093] Re: [regression] Fedora17 and ArchLinux dont appear in GRUB menu

[Jeffrey Walton]

This might also be useful for the Debian and Ubuntu folks: http://fedoraproject.org/wiki/How_to_create_and_use_Live_USB#Kernel_updates. It discusses the changes made at Fedora 17 and how to specify a boot image.
Unfortunately, I lack the necessary prerequisite knowledge to use it to fix these systems.

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https://bugs.launchpad.net/bugs/1038093

Title:
  [regression] Fedora17 and ArchLinux dont appear in GRUB menu

Status in “os-prober” package in Ubuntu:
  Fix Released
Status in “os-prober” source package in Precise:
  Confirmed
Status in “os-prober” source package in Quantal:
  Confirmed
Status in “os-prober” package in Debian:
  Fix Released

Bug description:
  The os-prober of Ubuntu 12.04 and 12.10 does not detect
  Fedora17/ArchLinux when Fedora17/ArchLinux's partition is unmounted
  (which is frequent). Consequence: Fedora17/ArchLinux does not appear
  in Ubuntu's GRUB menu.

  This bug did not exist with the os-prober of 11.10, so it is a
  regression of os-prober.

  The os-prober of 12.04 correctly detects Fedora16 but not Fedora17.

  WORKAROUND: mount the Fedora17/ArchLinux partition before doing
  update-grub in Ubuntu.

  Bug confirmed by several French users with Fedora17 and Ubuntu12.04
  /12.10 (http://forum.ubuntu-fr.org/viewtopic.php?pid=9695571#p9695571
  and http://forums.fedora-fr.org/viewtopic.php?id=57393 ).

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