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

On 11.11.2007 15:05, Thorsten Leemhuis wrote:
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.

I don't have an P5B @work, but i guess MSI cooks with water too. :-)

But i have a (1 year old) P5B @home and it is exactly like you said.

My main point is still the same, if Linux could force AHCI mode, i
wouldn't have to switch between those modes when booting Wintendo to
play some games. (And i could use AHCI @work where i can't switch it in
BIOS)


On a side note, with the mainboard i had before the P5B (ASUS, 925X
Chipset, ICH 6 or 7) Linux worked in AHCI-mode and Wintendo worked also
without problems. (IOW: I did not need to switch modes in BIOS!)






Bis denn

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