[parted-devel] [parted 1.8.8] boot partitions on disks larger than 2TB
H. Peter Anvin
hpa at zytor.com
Wed Jan 30 17:42:34 UTC 2008
Michael Reed wrote:
>
> Great minds.... The one thing I thought about with this idea is that
> it appears to be a mild violation of the Intel EFI spec regarding the
> content of PMBR. Specs can change....
>
> As I haven't tried this yet, does it require the
> "gpt" kernel parameter to override PMBR validation errors?
>
> Can the mentioned partition layout be created with parted?
>
Well, the EFI spec is, well, EFI-centric. All hail our new EFI
overlords, and all that. Otherwise, it might have specified a
GPT-centric BIOS boot protocol, but it didn't do so.
We can come up with another protocol, but it wouldn't be able to boot
Redmond OSes, and $DEITY only knows how many would follow it.
The bigger issue is that the PMBR being, well, an MBR, has a
4-paritition limit, and even two boot partitions could overflow that if
they are noncontiguous.
-hpa
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