Re: hdparm documentation

[Christian Franke <Christian.Franke@t-online.de>]

Pedro A ARANDA wrote:
> I'm trying to make the hdparm module run on my HP Mini 110. I have had 
> no luck,
> neither in doing so or finding documentation which could help me doing 
> so. If I get
> the right pointer and I make it run on my box, I'd be willing to post 
> a HOWTO, to
> make things easier to other people.
>
> I'm currently running Ubuntu 2009.10 with grub2.
>
> When I 
>
> set debug=ata
> insmod ata
>
> I actually get my drive listed as (ata0,0) but when I then
> try
>
> insmod hdparm
> hdparm -B 255 (ata0,0)
>
> grub keeps telling me that the drive (hd0) is not known... 
>

After 'insmod ata', loading of further modules typically fails because 
the drive in the 'prefix' variable is no longer valid.

The following works for me:

# Load needed modules first
insmod hdparm

# Switch to ATA driver and load ATA pass-through support
# (this invalidates prefix)
insmod ata_pthru

# Turn APM off
hdparm -B 255 (ata0)


-- 
Regards,
Christian Franke