Bug#663540: finds MSDOS when there is none

[Harald Dunkel <harri@afaics.de>]

Package: os-prober
Version: 1.49

os-prober finds some MSDOS partition on my laptop:

# os-prober
/dev/sda2:MS-DOS 5.x/6.x/Win3.1:MS-DOS:chain
# blkid | sort
/dev/sda1: UUID="063e2d53-7007-4112-822f-edcba00d2928" TYPE="ext4" LABEL="root"
/dev/sda2: LABEL="debian" UUID="af0b76b9-e91e-4bbd-a64c-b1a6199982bf" TYPE="ext4"
/dev/sda3: LABEL="swap" UUID="55a05f9b-346d-46c8-87a6-b0b8b2f5ad37" TYPE="swap"
/dev/sda4: LABEL="export" UUID="e1f404ed-b77d-4c24-91d1-7ff69540fdfa" TYPE="ext4"
# parted /dev/sda u s p
Model: ATA ST9160823AS (scsi)
Disk /dev/sda: 312581808s
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start       End         Size        Type     File system     Flags
 1      2048s       62492671s   62490624s   primary  ext4
 2      62492672s   96047103s   33554432s   primary  ext4
 3      96047104s   104435711s  8388608s    primary  linux-swap(v1)
 4      104435712s  312581807s  208146096s  primary  ext4


This makes /dev/sda2 unbootable. At boot time grub2 gives me

	error: invalid signature.

os-prober 1.42 from Stable doesn't show this problem:

# os-prober
/dev/sda2:Debian GNU/Linux (wheezy/sid):Debian:linux


Regards

Harri