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SubjectRe: ATA support for 4k sector size
Martin K. Petersen wrote:
>>>>>> "hpa" == H Peter Anvin <hpa@zytor.com> writes:
>
>>> Quick answer from one of my contacts. Desktop drives will indeed
>>> ship with an alignment of 1(*). The alignment is hardwired at time
>>> of manufacture and can't be changed.
>>>
>
> hpa> Oh God.
>
> hpa> This is a disaster.
>
> Rationale being that modern Microsoft operating systems know how to
> interpret the alignment bits. Legacy XP will work without changes
> thanks to the shifted alignment. And Vista+ will do the right thing to
> align partition 1 to what the drive reports.
>
> Also note that Windows only aligns the first partition. That's
> something we need to be aware of when setting up dual boot systems.
>

Yeah, but all of this completely breaks the disk image abstraction,
which is a very powerful paradigm.

-hpa



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