[SOLVED] What are the sectors 2-33 used for?

In regard to BIOS Boot Patition for GRUB, GPT says:
Afterwards, create a new partition with gdisk and manually specify its position to be sectors 34 - 2047, and set the EF02 partition type.
Given that sector 1 is allotted for MBR, what are the remaining sectors 2-33 allotted for?
Last edited by DiamondbacK (2013-08-03 21:10:27)

DiamondbacK wrote:I'm still confused that don't sector numbers start from 1 according to Wikipedia entry on LBA?
No; from the article you've referenced:
Wikipedia wrote:blocks are located by an integer index, with the first block being LBA 0
In this context, "block," "sector," and "LBA" are more-or-less synonymous. (There is a reference on that page to sectors in the CHS scheme ranging from 1-255, but that's in the CHS system, which is not used in GPT and is pretty much history even for MBR.)
If that's the fact, sectors 2 instead of sector 1 is allocated for Primary GPT Header, and sector 3-34 have to be allocated for Primary GPT Table which need 32 sectors. Then sector 34 can't be the beginning sector for BIOS Boot Partition.
This is all based on a false premise -- or at best, a non-standard numbering system.
Does that imply the sectors 34-2047 I quoted from Arch Wiki actually means LBAs 34-2047, which is equivalent to sectors 35-2048?
Again, false premise. Whether you call them blocks, sectors, or LBAs, these units are most commonly numbered starting from 0. Certainly that's true in both GPT fdisk (gdisk, cgdisk, and sgdisk) and parted, which are the two major classes of programs you're most likely to use for partitioning in Linux.

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[SOLVED] What are the sectors 2-33 used for?

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