Re: [PATCH] Add quirk to set AHCI mode on ICH boards

On 10.11.2007 00:32, Matthias Schniedermeyer wrote:
[...]
My computer/mainboard @work has such a "broken" BIOS. Of the 5
SATA-Ports this MB has only 1 (and 1 "missing" that is reported by
linux but i can't find on the MB) is configured as AHCI [...]

There is nothing "broken" here. You have a ICH8 (without R) that drives
four SATA ports, which are handled by ata_piix.

Then you have a Jmicron JMB363 -- it handles the PATA-Channel and two
SATA-Ports -- one internal (near the battery)/next to the PCI-Slot and a
external eSATA port. Seems you configured it in AHCI-Mode in the
BIOS-Setup. Linux will work just fine if you connect the hard disc to
that port. But if you want to install Windows XP you need a driver from
Jmicron.

There were BIOSes for the P5B where you could enabled AHCI for the ICH8
as well. It seems Asus removed it in the later BIOS-versions again as
Intel doesn't provide a Windows-AHCI driver for the basic ICH8.

HTH and clarifies some of your problems.

Cu
knurd

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