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[bug #42077] 64 bit live-USB successfully boots, but without persistence

From: Alberto Salvia Novella
Subject: [bug #42077] 64 bit live-USB successfully boots, but without persistence on UEFI pc
Date: Wed, 09 Apr 2014 08:18:46 +0000
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:28.0) Gecko/20100101 Firefox/28.0


                 Summary: 64 bit live-USB successfully boots, but without
persistence on UEFI pc
                 Project: GNU GRUB
            Submitted by: es20490446e
            Submitted on: mié 09 abr 2014 08:18:45 GMT
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: Feature Request
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Ubfan
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: Git master
         Reproducibility: Every Time
         Planned Release: None



The 64but 12.10 2G live USB was set up on a 32bit 12.04.1 non-UEFI host with
1G persistence.
The USB boots and persistence works on the non-UEFI host.
The USB boots in Secure boot mode but without persistence on a UEFI host.
The /proc/cmdline on the running live media shows the running kernel to be
vmlinuz.efi.signed, which of
course does not appear in any syslinux config files.
Looks like something got left out in the secure boot procedure to have

Live media created with the following iso:
800063488 Mar 18 11:14 ubuntu-12.10-desktop-amd64.iso
7ad57cadae955bd04019389d4b9c1dcb ubuntu-12.10-desktop-amd64.iso

The UEFI host is a Toshiba Satellite S855-5378 and has Windows 8
so no legacy BIOS is present.

If you need more information, you can have a look at the original report at


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