Support for WD Advanced Format disks

Dag-Erling Smørgrav des at
Mon Aug 30 11:05:39 UTC 2010

Ilya Bakulin <webmaster at> writes:
> So, ad7p1.nop is shifted by 512 bytes and resides right on the
> beginning of the physical sector. And it has 4096 "sector" size.

Why did you shift the gnop?  Did you short jumper 7-8?

> For some reason, phybs begins with sector size 8192... I expected it
> to begin with 4096...

It starts at 2 x reported sector size, because it is designed primarily
to test alignment, not performance.

> Perfomance is excellent!

No, performance blows.  See here:

> Notice, that for two subsequent phybs invocations there is big
> difference in timings for the same parameters.

Yes.  WD Green disks suck.

Dag-Erling Smørgrav - des at

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