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

[falstaff]

I made a script which creates working boot entries for Windows 7/8 as
long as the EFI system partition is mounted at /boot/efi (which normally
happens):

https://gist.github.com/4330598

Use it like this:

$ wget https://gist.github.com/raw/4330598/adaf598a78d568dbfada596441bdfad3b4dd3f97/25_windows_uefi
$ sudo su 
# cp 25_windows_uefi /etc/grub.d
# chmod +x /etc/grub.d/25_windows_uefi
# echo GRUB_DISABLE_OS_PROBER=true >> /etc/default/grub # disable broken os-prober
# update-grub

See also this blog post how to install Grub with Secure Boot mode (if
installer fails to do it)

http://falstaff.agner.ch/2012/12/18/ubuntu-12-10-and-windows-8-with-
secure-boot-mode/

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to grub2 in Ubuntu.
https://bugs.launchpad.net/bugs/1024383

Title:
  invalid Windows EFI entries in GRUB

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

Bug description:
  64bits computer with pre-installed EFI Windows 7. (remark: same bug if
  Windows8)

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

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

  It appears that GRUB creates BIOS/mbr entries when it should be
  UEFI/gpt type entries.

  *********************** 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 )

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1024383/+subscriptions