[Bug 1660159] Re: os-prober fails to see other installed systems

[Mathieu Trudel-Lapierre]

I've gotten report from flocculant that os-prober still fails to see
other OSes in his setup; re-opening. Is anyone else able to reproduce
the issue?

** Changed in: os-prober (Ubuntu Zesty)
       Status: Fix Released => Incomplete

** Changed in: os-prober (Ubuntu Zesty)
   Importance: Undecided => Critical

** Changed in: os-prober (Ubuntu Zesty)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox)

** Changed in: os-prober (Ubuntu Zesty)
    Milestone: None => ubuntu-17.02

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Title:
  os-prober fails to see other installed systems

Status in os-prober package in Ubuntu:
  Incomplete
Status in os-prober source package in Zesty:
  Incomplete

Bug description:
  Running sudo update-grub I found that all the existing installations
  were lost from grub. Leaving just the running xubuntu in grub.

  Generating grub configuration file ...
  Found linux image: /boot/vmlinuz-4.9.0-15-generic
  Found initrd image: /boot/initrd.img-4.9.0-15-generic
  Found linux image: /boot/vmlinuz-4.9.0-12-generic
  Found initrd image: /boot/initrd.img-4.9.0-12-generic
  done

  Downgraded to os-prober_1.73ubuntu1 and rerun of update-grub showed
  the same.

  Downgraded to os-prober_1.70ubuntu5 and running update-grub now shows

  Generating grub configuration file ...
  Found linux image: /boot/vmlinuz-4.9.0-15-generic
  Found initrd image: /boot/initrd.img-4.9.0-15-generic
  Found linux image: /boot/vmlinuz-4.9.0-12-generic
  Found initrd image: /boot/initrd.img-4.9.0-12-generic
  Found Ubuntu 16.04.1 LTS (16.04) on /dev/sdb5
  Found Ubuntu 16.10 (16.10) on /dev/sdb7
  Found Ubuntu Zesty Zapus (development branch) (17.04) on /dev/sdb8

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: os-prober 1.73ubuntu2
  ProcVersionSignature: Ubuntu 4.9.0-15.16-generic 4.9.5
  Uname: Linux 4.9.0-15-generic x86_64
  ApportVersion: 2.20.4-0ubuntu1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Sun Jan 29 16:45:46 2017
  InstallationDate: Installed on 2016-06-11 (231 days ago)
  InstallationMedia: Xubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160611)
  SourcePackage: os-prober
  UpgradeStatus: No upgrade log present (probably fresh install)

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