Re: Does grub-mkrescue support UEFI hybrid USB/DVD images?

[adrian15]

El 24/01/15 a las 01:12, adrian15 escribió:
> El 22/01/15 a las 22:25, Kris Moore escribió:
> > Hey all,
> >
> > We are trying to create hybrid USB/DVD images, and they work just fine
> > on BIOS. However it doesn't seem to work when creating UEFI.
> >
> > We are using the following:
> >
> > # grub-mkrescue -d "/usr/local/lib/grub/x86_64-efi" -o <outfile> <dir>
> > -- -volid "OURLABEL"
> >
> > This image does boot UEFI via DVD, but when copied to a USB stick with
> > dd it fails to boot with the following:
>
>    Hi,
>
>    I'm going to describe what I use for making a USB/CDROM EFI/x86
> hybrid image for building SG2D (An improved Grub2 Disk).
>
>    But my question (after reading other replies to this question) is why
> Grub2 should be patched for what he wants ? Is it a non standard EFI
> boot maybe?
>
>    Thank you.
>
>    Debian way
>    ==========

I just wanted to say that recipe does not produce an image that can be 
booted from UEFI hard disk.

I had assumed all this time that it worked (I only tested the EFI CDROM 
boot) because if you read it here:

https://www.gnu.org/software/grub/manual/html_node/Making-a-GRUB-bootable-CD_002dROM.html#Making-a-GRUB-bootable-CD_002dROM


grub-mkrescue -o grub.iso iso
This produces a file named grub.iso, which then can be burned into a CD 
(or a DVD), or written to a USB mass storage device.

So, if I'm not mistaken that's not true when you boot from EFI (Well, I 
know that you are fixing it on this thread).

adrian15
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