On Wed, Apr 13, 2016 at 03:46:20PM +0200, Stefan Hundhammer wrote:
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.
On GPT each partition has a "Partition type GUID" and a "Unique partition GUID", see "GUID partition entry format" on https://en.wikipedia.org/wiki/GUID_Partition_Table. The first is just a type ID and can occur multiple times. It replaces the byte ID of MS-DOS partition tables. Surely, the EFI standard can have additional requirements on the ESP. ciao Arvin -- Arvin Schnell, <aschnell@suse.com> Senior Software Engineer, Research & Development SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) Maxfeldstraße 5 90409 Nürnberg Germany -- To unsubscribe, e-mail: opensuse-storage+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-storage+owner@opensuse.org