This bug was fixed in the package grub2 - 2.02~beta2-9
--------------- grub2 (2.02~beta2-9) unstable; urgency=medium
* Backport from upstream: - Tolerate devices with no filesystem UUID returned by os-prober (LP: #1287436).
-- Colin Watson <email address hidden> Thu, 10 Apr 2014 17:34:44 +0100
This bug was fixed in the package grub2 - 2.02~beta2-9
---------------
grub2 (2.02~beta2-9) unstable; urgency=medium
* Backport from upstream:
- Tolerate devices with no filesystem UUID returned by os-prober
(LP: #1287436).
-- Colin Watson <email address hidden> Thu, 10 Apr 2014 17:34:44 +0100