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

[Jeffrey Walton]

@D. Hugh Redelmeier (hugh-mimosa) 
Yeah, I can get the OS Prober to recognize the Fedora volumes by first mounting. However, the GRUB menu will not display them as an option during boot.

I've tried the following, and they do not produce expected results
(i.e., no menu entry for Fedora during boot):

    # First mount Fedora volume
    $ sudo update-grub

and

    $ sudo grub-mkconfig
    $ sudo grub-install -o  /dev/sda

I'm working from memory because I don't want to boot into Ubuntu right
now. I've tried the commands above on Ubuntu with grub and grub2 (don't
recall which grub works for which command).

Apparently I'm too dumb to figure out how to fix things in Fedora given
the exiting documentation. There's nothing special about me, so I
imagine there are other folks experiencing the same pain.

All of this could be avoided if (1) Ubuntu fixed the problem; (2) GRUB
allowed me to boot to a device (i.e., simply specify /dev/sda6); or (3)
or Fedora provided a boot repair disk. As far as I know, we have none of
them.

I've literally wasted hours on this. I'm ready to cut my losses and
simply let Fedora manage GRUB and booting.

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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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