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

[Andreas Roedl]

Hey,

On Fri, Jan 9, 2009 at 1:21 AM, Mircea Gherzan
<mgherzan@anaconda.cs.pub.ro> wrote:
> 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?

Not me. My harddisk is a Seagate Momentus 7200 160GB (ST9160823AS) and I do have

 /sys/block/sda/device/unload_heads

with kernel 2.6.28.


Andreas