On Wed, 14 Oct 2009, Ken Teh wrote: > I just installed SL5.3 on a Supermicro PDSBE motherboard and its disk i/o is > painfully slow; about 3MB/s. The system has SATA drives but the kernel sees > them as /dev/hdx devices. There is also a ata_piix message at the beginning > of bootup that says "no available legacy port". I'm guessing the failure to > recognize the SATA drives as /dev/sdx and the slow disk i/o are related to > this cryptic message. > > I tried switching the SATA mode in the BIOS to compability instead of > enhanced. It didn't make any difference. I wasn't expecting any. The > compatibility vs native stuff, I thought, was something that was done when > SATA support for spotty. The SATA controller is an Intel ICH8 which I figure > should be well supported. > Any ideas on how to proceed? Build a custom kernel? Which I am reluctant to > do since I rely on SL for updates. Try SL5.4 ? -- Dr. Andrew C. Aitchison Computer Officer, DPMMS, Cambridge [log in to unmask] http://www.dpmms.cam.ac.uk/~werdna