Trying to mark a grub GPT partition with parted give me error

Question

i try to mark mygrub partition to boot my system and when i reach the line in grub archwiki
parted /dev/disk set X bios_grub on
i get an error :
Parted: Invalid token: bios_grub
Last edited by Ferdinand866 (2013-05-27 22:43:35)

Answer 1

Have you already made the parition?  I know next to nothing about using parted, I am a gptfdisk user myself (gdisk), but I do know that if that is the exact command you used, you are not actually specifying anything with /dev/disk.  There is a /dev/disk directory, but it leads to a bunch of symlinks for various alternative names for /dev/sda, /dev/sdb, etc.  I think what it is asking for is to actually specify the partition where the small grub partition is located.  So if you put it at the beginning of the first disk it would be /dev/sda1. 
Alternatively, you could just use gdisk.  I think gdisk is much much more user friendly, and has a much saner approach to partition type codes.  Use the interactive functionality with "gdisk /dev/sda" (assuming you want to modify sda), then enter a "?" to get a list of available options.  I think it is a "t" that allows you to change the partition's type code.  Select the partition you want to modify, and then change the code to ef02.