Bug#924053: live-build: UEFI shows grub> on HP250 G6 2SX60EA

[adrian15 <adrian15sgd@gmail.com>]

El 09/03/19 a las 15:03, Thomas Schmitt escribió:
> Hi,
> 
> adrian15 wrote:
>> Well, guess what happened... my obvious patch:
>>  if ! search --set=root --file /live/vmlinuz ; then
>            search --set=root --file /live/vmlinuz1
>> does not boot in my computer because it's still finding /live/vmlinuz in
>> the internal hard disk.

So, I have been taking a look at Debian official Live build images
(which are built with lwr) and they happen to search for:


search --set=root --file /.disk/info


So there are two scenarios where this might arise as a problem:

1) Two live USB images being plugged in at the same time.
And somehow the UEFI firmware is so good that it shows both of them to grub.

I think we shouldn't care too much about this scenario because it's too
unlikely.

2) One live USB image plugged in. And some computer manufacter having
installed a possibly lwr based live build on an internal hard disk
partition.

I think this is highly unlikely because when you build an image designed
to be used in a hard disk you do not use mkisofs. Why? Because you want
the partition to be writable. Isn't it?
So if mkisofs is not used then there won't be a /.disk/info file.

So there is not a problem.


What I'm saying with all of this is that I'm going to propose a fix that
involves not using any earmark (which involves too much work) but just
searching for /.disk/info instead.

Hopefully Thomas you are not too bad at me. You seemed to be very
excited with all of this earmark implementation ;) .


adrian15
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