Mailinglist Archive: opensuse-storage (14 mails)

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Re: [opensuse-storage] Re: Reusing partitions in the proposal
  • From: Stefan Hundhammer <shundhammer@xxxxxxx>
  • Date: Wed, 13 Apr 2016 15:46:20 +0200
  • Message-id: <570E4DAC.7030405@suse.de>
On 13.04.2016 14:10, Jiri Srain wrote:
What prevents us from having two EFI partitions?

The EFI standard?

I had understood that there can only be one EFI system partition. Maybe I am wrong; but we should investigate this.

https://en.wikipedia.org/wiki/EFI_system_partition

"The globally unique identifier (GUID) for the EFI System partition in the GUID Partition Table (GPT) scheme is C12A7328-F81F-11D2-BA4B-00A0C93EC93B, while its ID in the MBR partition table scheme is 0xEF."

I.e. there is a paredefined GUID for that partition; if there are multiple ones, they'd get the same GUID which sounds like a recipe for desaster to me.

It doesn't even seem to be clear if another disk can have one, too:

http://superuser.com/questions/688617/how-many-efi-system-partitions-esp-can-a-computer-have

But we should clearly get some authoritative answer from our resident EFI specialists (Raymund Will (?) - couldn't reach him on the phone just now).


Kind regards
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Stefan Hundhammer <shundhammer@xxxxxxx>
YaST Developer

SUSE Linux GmbH
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