Subject: Re: bootblocks
To: Wolfgang Rupprecht <email@example.com>
From: Hal Murray <firstname.lastname@example.org>
Date: 04/07/1999 15:27:48
> For some serendipitous reason, even though the disks are different
> models they have exactly the same geometries.
No serendipity. It's a general industry trend.
The geometry you see is fake. Any modern drive is zoned so a simple
geometry can't describe it anyway. The drive firmware translates
the internal geometry to/from a simple fake external geometry that
it tells you about.
Rounding the total size down a bit to match a "standard" size means
that you can do things like replace drives in a raid set or do a
disk-to-disk copy and have everything work right without having to
use a the same manfacturer/model target disk as the original one.
Think of the others as being clones of the "standard" if you prefer.