Bug#791383: Invalid detection of Windows Vista+ loader

[Gianluigi Tiesi <sherpya@netfarm.it>]

Package: os-prober
Severity: normal

Hi, sometimes os-prober is unable to detect the exact version
of windows loader is in use and mark the entry as vista (the fallback)
this is due the fact grep is called without -a, so in os-probes/20microsof

bootmgr detections should be done without grep -qas instead of grep -qs

Sometimes it works because grep treats the file as ascii, sometimes not

Regards


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages os-prober depends on:
ii  libc6  2.19-18

os-prober recommends no packages.

os-prober suggests no packages.