Re: Can not get UDMA-100 working... SOLVED !!!

[Dominique Deleris <dominique.deleris@bluewin.ch>]

Thanks to anyone for your feedback. Yes, the cable is connected
correctly to the MB (blue connector), and to the drive (black
connector, since drive is alone). I had also tried `hdparm -X69
/dev/hda` without success. And when I was getting the drive
working correctly, then the day after, at machine startup, it
would again ignore the UDMA-100 mode.

In fact, this seems to be caused by the kernel itself: I've
checked in the linux-kernel mailing list archives, and found out
that other people had the same problems with the Promise stuff.

To solve this, just add "idex=ata66" to the kernel parameters in
lilo or grub (where x is the ID of the HDD on which to force
UDMA-66/100): it will bypass cable detection and force UDMA-100 mode.

Now everything is working fine :-)

Thanks again to everybody.

Cheers,

Dominique