Re: Silo and Raid1
On Wed, 14 Dec 2005 11:01:47 +0100, Turbo Fredriksson wrote:
> If you're going to use RAID on the disk, the first partition MUST start
> on block 1 (one!), not 0 (zero). Can't remember exactly why (usually I
> forget 'obvious reasons' :) but it have something to do with with ext2/3
> inode list, the boot block or with the RAID system needing block zero for
> something...
The first few blocks of an ext2 or ext3 filesystem are unused, so
putting one at the start of the disk doesn't matter - the SILO code and
the disk label in block 0 of the disk are untouched.
A partition that's part of an MD array will have data written to it from
its first block, so if it starts on block 0 of the disk then SILO and
the disk label be overwritten.
> NOTE: This is true EVEN if the first partition isn't an MD!
Why's that?
S.
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