[issue1306] Unable to boot to USB disk using EFI/UEFI

[Daniel Walton]

New submission from Daniel Walton <daniel.walton at gmail.com>:

Have tried two methods to boot USB disks using EFI/UEFI
### 1. USB disk created using dd cdrom.iso > usb disk
What steps will reproduce the problem?

create usb disk by using dd/ddrescue onto a usb flash drive.
in my case i used the following command after booting from the grml CD

ddrescue --force /dev/cdrom /dev/sdb


What is the expected output? What do you see instead?
For PC and MAC (imac)
  no UEFI boot option appears for the usb disk (grml 2013.9 installed to USB
disk works fine)


What version of the product are you using? On what operating system?

Using grml 2014.03 full 96
On a newish PC that allows UEFI as well as legacy booting methods.

### 2. USB disk created using "grml2usb /dev/cdrom /dev/sdb1" to usb stick with
formatted fat32 partition
What steps will reproduce the problem?

make USB stick and then try to boot from a MAC or a PC with UEFI capability


What is the expected output? What do you see instead?

On PC& MAC the drive appears and shows it has EFI/UEFI booting capability but
when you boot the following error occurs. (within the """ delimiters)

"""
unknown command 'normal'.
E: Could not find root device!
Error: no such device: /conf/bootid.txt
Entering rescue mode...
grub rescue>
"""

What version of the product are you using? On what operating system?

Using grml 2014.03 full 96

On a newish PC that allows UEFI as well as legacy booting methods.

----------
messages: 4796
nosy: daniel.walton
priority: bug
status: unread
title: Unable to boot to USB disk using EFI/UEFI

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GRML issue tracker <bts at bts.grml.org>
<http://bts.grml.org/grml/issue1306>
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