On Thu, Oct 24, 2013 at 2:09 PM, Chris Davies <ch...@roaima.co.uk> wrote: > Tom H <tomh0...@gmail.com> wrote: >> On Thu, Oct 24, 2013 at 9:04 AM, Chris Davies <ch...@roaima.co.uk> wrote: >>> I assume the 1MB space at the beginning is for grub_boot? I found I >>> needed that for my big (3TB) GPT disks. What's the space required at >>> the end of the disk? > >> A gpt disk needs 34 sectors at its beginning; the 0th is the mbr, the >> 1st is the gpt header, the 2nd-33rd are for the partition table (for >> 128 possible partitions at 128 bytes per partition). And it needs 33 >> sectors at its end; it's the same as the beginning minus the mbr. > > What does it use those sectors at the end for? A duplicate of the ones > at the front? If so, do parted and other partitioning tools write to both?
The sectors at the beginning are the primary gpt config and the sectors at the end are the secondary gpt config. gdisk and parted (and AIUI the latest fdisk) create both since this is part of the gpt specs. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAOdo=sx4pvjzfvkpxytkik4qvd6hz4_amugoe0ctmbdw7os...@mail.gmail.com
