[Bug 1069475] Re: grub fails to boot unsigned kernel

[Steven Webb]

I'm having the same issue. The problem seems to be the grub
configuration is pointing to the wrong filename. It's trying to load
/casper/vmlinuz.efi.signed which isn't in the disc image. By editing the
boot options to use /casper/vmlinuz I was able to boot successfully
without modifying the image.

I have no idea what the security implications are for doing this;
however, if others want to try you can do the following:

1) Boot to the grub menu
2) Press F2 (I think it was f2, the instructions at the bottom tell you) to edit the boot option
3) modify the section reading /casper/vmlinuz.efi.signed to be /casper/vmlinuz
4) press F10 to boot

Steve.

-- 
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/1069475

Title:
  grub fails to boot unsigned kernel

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  Hi all,

  I have tried to install Ubuntu 12.10 Gnome Remix (stable) from usb-
  stick. After grub2 has booted I selected try Ubuntu without installing
  and then I got the following error:

  error: file '/casper/vmlinuz.efi.signed' not found
  error: you need to load kernel first.

  Please press any key to return.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: grub2 2.00-7ubuntu10
  Architecture: amd64
  SourcePackage: grub2

  Motherboard used: Asus M5A99x EVO (not SecureBoot enabled I believe?)

  
  Kind regards,

  Paul Zeiger

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1069475/+subscriptions