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Re: [patch] search for partition using GPT GUID
From: |
Vladimir 'φ-coder/phcoder' Serbinenko |
Subject: |
Re: [patch] search for partition using GPT GUID |
Date: |
Fri, 02 Apr 2010 22:01:07 +0200 |
User-agent: |
Mozilla-Thunderbird 2.0.0.22 (X11/20091109) |
address@hidden wrote:
>> I asked you for at least a usecase when it makes a difference but till
>> now I've read only about theoretical advantages.
>>
>
> Ok, my usecase is the following:
> We are installing grub to EFI system partition and on the next load it must
> load itself (rmadisk&kernel) from Windows partiton (where our main product is
> installed). It need however to find the NTFS partition with our product, the
> only ways is GPT GUID.
>
> Out of Linux world FS UUID is nothing, our main product works on Windows, and
> the only way to identify the partition correctly - GUID. UEFI spec also use
> GPT GUIDs in it's "device path", same as Windows.
>
> grub2 is not for Linux load only.
>
>
I thought about this and decided that it's ok to have this functionality
as long as it's implemented cleanly. In particular:
- It shouldn't be named "GPT GUID" but something like PARTITION GUID. If
partition is GPT then GPT UUIDs are used, if it's msdos then nt-like
UUIDs should be used and so on. You don't have to implement non-GPT but
arcitecture must be clean
- It must not give any size increase of basic modules
- grub-probe must support it (trivial)
- Not used by default
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--
Regards
Vladimir 'φ-coder/phcoder' Serbinenko
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