Re: [U-Boot] [PATCH] Add support for CONFIG_EFI_PARTITION (GUID Partition Table)

Also, please enlighten me: what is "EFI", and what is a "GUID" partition table, and which systems do use that?

EFI is the PC BIOS replacement that Intel came up with, most notably used on Apple's Intel based computers. A blurb about EFI is here - http://en.wikipedia.org/wiki/Extensible_Firmware_Interface