[Bug 1183074] Re: GRUB fails to boot Windows when SecureBoot enabled

[Steve Langasek]

*** This bug is a duplicate of bug 807801 ***
    https://bugs.launchpad.net/bugs/807801

You said that the info there was the result of running Boot-Repair's
Recommended Repair, which AIUI modifies the boot entries.  Are you
saying that they're identical to the entries from a stock grub2 install?

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https://bugs.launchpad.net/bugs/1183074

Title:
  GRUB fails to boot Windows when SecureBoot enabled

Status in “grub2” package in Ubuntu:
  Incomplete

Bug description:
  Computer with preinstalled Windows8. SecureBoot enable by default.

  1) User installed Ubuntu13.04 64bit.
  After install and reboot, GRUB appears, allows to boot Ubuntu correctly, but the Windows entry fails.

  2) Used Boot-Repair's Recommended Repair, which added some Windows entries in /etc/grub.d/25_custom
  http://paste.ubuntu.com/5686992
  No entry allow to boot Windows

  3) Disabled SecureBoot in the UEFI firmware, then ran Boot-Repair's Recommended Repair, which purged grub (and shim and linux-signed) then installed grub-efi.
  http://paste.ubuntu.com/5689721
  User can now boot Windows from GRUB.

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