On 20.06.17 14:02, Ard Biesheuvel wrote:
On 20 June 2017 at 13:55, Alexander Graf agraf@suse.de wrote:
On 20.06.17 08:35, Emmanuel Vadot wrote:
While MBR partition isn't supposed to work in a EFI environment some
It actually is supposed to work :). I've used it on edk2 based systems a few times already.
Correct. Even though UEFI reinvented everything including partitioning, the spec mandates support for MBR, GPT and El Torito for platforms that have the ability to boot from SSD/HDD drives and/or optical drives.
board rely partially or fully on MBR (BeagleBone, RPI and probably others). This export the MBR partition as logical partition which is useful to efi application that cannot read raw disks.
Signed-off-by: Emmanuel Vadot manu@bidouilliste.com
I think we should do whatever edk2 does here to stay compatible. Ard, can you please enlighten me what that would be? Does edk2 expose logical partitions as raw disks?
The UEFI partition driver consumes block and disk I/O protocols of raw devices and produces the same protocols for each individual partition that it recognizes.
I hope this answers your question, otherwise could you elaborate?
This basically answers my question, yes.
So we really should just provide block devices for *every* partition type we support, not just MBR as is done in this patch.
Emmanuel, could you please extend the patch to cover all partition label types?
Thanks,
Alex