[Bug 1024383] Re: invalid Windows7 EFI entries in GRUB

Christophe Espiau christophe.espiau at gmail.com
Mon Sep 10 15:24:25 UTC 2012

I'm affected too.

As znorrt in post #5, dual boot ubuntu 12.04 / windows seven with efi/gpt.
Solved using boot-repair.

Details here (in French): 

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  invalid Windows7 EFI entries in GRUB

Status in os-prober:
Status in “grub2” package in Ubuntu:
Status in “grub2” package in Debian:

Bug description:
  64bits computer with pre-installed EFI Windows 7.

  Installed Ubuntu 64bits in dual-boot. GRUB (grub-efi) is correctly
  installed and allows to boot Ubuntu, but it does not allow to boot

  Its menu shows 2 INVALID Windows entries. When selecting these
  entries, it displays "Invalid EFI file path" error, and returns to
  GRUB menu.

  ### BEGIN /etc/grub.d/30_os-prober ###
  menuentry "Windows 7 (loader) (on /dev/sda3)" --class windows --class os {
      insmod part_gpt
      insmod ntfs
      set root='(hd0,gpt3)'
      search --no-floppy --fs-uuid --set=root EE00AEA700AE75ED
      chainloader +1
  menuentry "Windows Recovery Environment (loader) (on /dev/sda5)" --class windows --class os {
      insmod part_gpt
      insmod ntfs
      set root='(hd0,gpt5)'
      search --no-floppy --fs-uuid --set=root B2BCAC28BCABE557
      drivemap -s (hd0) ${root}
      chainloader +1
  ### END /etc/grub.d/30_os-prober ###

  *********************** WORKAROUND **************************

  either boot Windows from the (EFI) BIOS menu, or add valid Windows entries via Boot-Repair.

  (original thread in French: http://forum.ubuntu-fr.org/viewtopic.php?pid=10010231#p10010231 )

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