partitions/efi: complete documentation of gpt kernel param purpose

The usage of the 'gpt' kernel parameter is twofold: (i) skip any mbr
integrity checks and (ii) enable the backup GPT header to be used in
situations where the primary one is corrupted.  This last "feature" is not
obvious and needs to be properly documented in the kernel-parameters


Signed-off-by: Davidlohr Bueso <>
Cc: Matt Domsch <>
Cc: Matt Fleming <>
Cc: "Chandramouleeswaran,Aswin" <>
Cc: Chris Murphy <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
1 file changed