We have issues with a new laptop - the hard drive controller (ICH6 I
think) is not recognised. When you run 'img ih' it says "Intel Corporation
Unknown device 0x2653".

The HDD is PATA, and mounts as /dev/hdc. The problem is that it operates
VERY S L O W L Y. A restore operation that takes 15 mins on another laptop
might take 60 mins.

The HDD does not have DMA enabled, and hdparm -d1 /dev/hdc says that DMA
cannot be enabled. There are no settings in the BIOS that seem relevant
apart from a "32-bit" setting, which makes no difference.

Have you seen this?
Where might I find a driver to solve this?