Re: 'device ...' line in grub.cfg

[Andrei Borzenkov]

On Thu, Jun 2, 2016 at 5:25 PM, David Kaspar [Dee'Kej]
<address@hidden> wrote:
> Does UEFI part of grub-legacy reads this line (from grub.cfg)?
> -----
> device (hd0) HD(1,123,123abc,01234567-89abcdef-01234567-89abcdef)
>

grub legacy upstream does not support this. efi support is part of
1.7MB large RedHat patch. It's rather amusing you ask upstream what
this patch does :)

> In other words, is this line necessary for doing a boot on UEFI enabled
> device?
>

After cursory look at your patch, it assigns device names. So if your
grub.conf (not grub.cfg) relies on specific device names (hd0, hd1
etc) then it is likely necessary.

> David Kaspar [Dee'Kej]
> Associate Software Engineer
> Brno, Czech Republic
>
> RED HAT | TRIED. TESTED. TRUSTED.
> Every airline in the Fortune 500 relies on Red Hat.
> Find out why at Trusted | Red Hat.
>
> On Thu, Jun 2, 2016 at 4:19 PM, Andrei Borzenkov <address@hidden>
> wrote:
>>
>> On Thu, Jun 2, 2016 at 5:11 PM, David Kaspar [Dee'Kej]
>> <address@hidden> wrote:
>> > So, this is not some debugging info from grub UEFI? And grub actually
>> > reads
>> > this during boot to find the specified device?
>> >
>>
>> grub legacy or grub2? Reads *what*? Sorry, I still do not understand
>> your question.
>>
>> > David Kaspar [Dee'Kej]
>> > Associate Software Engineer
>> > Brno, Czech Republic
>> >
>> > RED HAT | TRIED. TESTED. TRUSTED.
>> > Every airline in the Fortune 500 relies on Red Hat.
>> > Find out why at Trusted | Red Hat.
>
>