[ltp] T500, Seagate drive, "UNLOAD FEATURE"

[Mircea Gherzan]

Hi,

My T500 came with a Seagate Momentus ST9250827AS drive. Having a
vanilla 2.6.28 with UNLOAD FEATURE support, I was shocked to find out
there's no unload_heads entry in sysfs for my drive.

To double-check, I added some printk's in ata.h to see the ATA major ID
and the content of the ATA CFSSE word [1].

If the drive can't park the heads on request, how does TAPS/HDAPS work
on Windows? Or is it just marketing???

Has anyone encountered this issue?


Thanks,
Mircea

[1]
http://www.thinkwiki.org/wiki/Installing_Debian_Sid_on_a_ThinkPad_T500#Hard_drive_making_hdapsd_useless

-- 
Mircea Gherzan
Faculty of Automatic Control and Computers
Politehnica University of Bucharest