Support for WD Advanced Format disks

Bakul Shah bakul at
Tue Aug 10 22:50:14 UTC 2010

After poking around some, it seems ATA/ATAPI-7 Identify
Device word 106 bit 13 is set to 1 and bits 0-3 are set to 3
(for 2^3 or 8 LBAs per sector) for a 4KB sector size (pin 7-8
jumper on a WD AF disks presumably changes this setting to
0,0).  See page 121 of Atapi-7 volume 1 (google for

Hopefully this helps in whatever `clean solution' you are
looking for?

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