Bug#680720: 30_os-prober tries to chainload +1 on UEFI

[Andrey Rahmatullin]

Package: grub-common
Version: 1.99-22.1
Severity: normal

If /etc/grub.d/30_os-prober encounters e.g. Windows (maybe in some other cases)
it generates "chainloader +1" instruction which cannot work on EFI and will
yield "Invalid EFI file path" on boot. An EFI bootloader apparently cannot
chainload a BIOS bootloader at all, OTOH it could be possible to detect EFI
systems and chainload them.



-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.4.1-wrar-5+ (SMP w/4 CPU cores; PREEMPT)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages grub-common depends on:
ii  gettext-base        0.18.1.1-9
ii  libc6               2.13-34
ii  libdevmapper1.02.1  2:1.02.74-4
ii  libfreetype6        2.4.9-1
ii  libfuse2            2.9.0-5
ii  zlib1g              1:1.2.7.dfsg-13

Versions of packages grub-common recommends:
ii  os-prober  1.53

Versions of packages grub-common suggests:
ii  desktop-base   7.0.0
pn  grub-emu       <none>
pn  multiboot-doc  <none>
pn  xorriso        <none>

-- Configuration Files:
/etc/grub.d/40_custom changed [not included]

-- no debconf information