[Bug 1229488] Re: 13.10 USB to USB Install on UEFI Secure Boot Machine Left Host Unbootable

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: grub2 (Ubuntu)
       Status: New => Confirmed

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Title:
  13.10 USB to USB Install on UEFI Secure Boot Machine Left Host
  Unbootable

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  Downloaded Sept. 20 daily build of 13.10, 64 bit, desktop ISO, md5sum
  checked it, used "create startup disk" on 13.04 secure boot host to make
  USB live media, rebooted from it, and successfully installed 13.10 to
  another USB. Target USB had gpt partitioning, had an EFI partition set
  up on it, and the user selected bootloader location was the USB's EFI partition.  The USB installation does not boot (ESP is empty, bug 1173457) and the laptop no longer boots from its hard disk, leaving you at the grub prompt.

    The cause bootfailure was twofold:
  1)The installation improperly changed the hard disk's grub.cfg (bug 1173457).
  2)The NVRAM boot entry was improperly changed from shimx64.efi to grubx64.efi (this bug) which will not boot when secure boot is enabled.  

  No NVRAM changes or additions were expected from installing to a USB
  stick.   The existing NVRAM  boot entry was correct for secure boot -- /EFI/ubuntu/shimx64.efi.  The changed NVRAM was /EFI/ubuntu/grubx64.efi and
  is incorrect for a secure boot, it doesn't work.

  Additional notes: The shim entry which was changed to grub was not the
  default, Windows was the default boot entry.

  Hardware: Toshiba Satellite S855-5378, Insydh20 firmware version 6.60,
  8G memory, 750G hard disk, Intel HD4000 video, running dual boot W8 and
  fully patched 64 bit 13.04 Ubuntu desktop with secure boot enabled. The only
  secure boot issue with this machine is the inability to boot Windows
  from grub (bug 1091464), so Windows is the default, and the EFI menu is used
  to select Ubuntu to run shim/grub.  In /EFI/Boot is a copy of shimx64.efi named bootx64.efi and a copy of grubx64.efi. This machine uses this as a
  fallback, allowing Ubuntu to boot.

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