swapping disk with UEFI hardware - a dead end?

Matthew Garrett mjg59 at srcf.ucam.org
Thu Jun 28 19:25:47 UTC 2012

On Thu, Jun 28, 2012 at 12:04:41PM -0600, Chris Murphy wrote:

> I don't know what UEFI version Lenovo purports to conform to, but the 
> lack of an EFI//EFI/BOOT/BOOTx64.EFI image isn't an excuse for it 
> failing to boot a previously bootable disk that is in no way 
> malformed. This seems to be a case of bad firmware behavior that isn't 
> conforming to section 3.3 of the spec.

Swapping a drive between machines means that you now have a drive UUID 
that doesn't match any of the boot options. 3.3 says that it should then 
attempt to boot from the device, and the only spec-defined boot location 
is EFI/BOOT/BOOT(machine type).efi. It seems to conform to the spec 

Matthew Garrett | mjg59 at srcf.ucam.org

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