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SubjectRe: ATA 4 KiB sector issues.
On 03/16/2010 06:24 AM, James Bottomley wrote:
>
> Because the msdos label can only partition in units of cylinders. If
> you're using an msdos label, picking the right H/S gets you alignment.
>

This is doubly false.

An MS-DOS partition table can partition at any boundary. Some OSes
(like some versions of MS-DOS) needed track alignment because their boot
loaders did not support crossing track boundaries.

Second, the primary field in the (modern) MS-DOS partition table is an
LBA field. The CHS fields are largely historic and useless because of
the 1024-cylinder limitation, and by only being 24 bits total.

-hpa


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