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From: Hilko Meyer <Hilko.Meyer@gmx.de>
To: Hilko Meyer <Hilko.Meyer@gmx.de>
Date: Thu, 04 Dec 2008 02:35:06 +0100
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Cc: adnan@hochpass.uni-hannover.de, Ulf Lilleengen <lulf@stud.ntnu.no>,
	freebsd-geom@freebsd.org
Subject: Re: System freeze with gvinum
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Hilko Meyer schrieb:
>Ulf Lilleengen schrieb:
>>On Sat, Nov 29, 2008 at 11:47:59PM +0100, Hilko Meyer wrote:
>>> Involved hardware:
>>> atapci0: <nVidia nForce MCP65 UDMA133 controller>
>>> ad4: 476940MB <Seagate ST3500320NS SN05> at ata2-master UDMA33
>>> ad5: 476940MB <Seagate ST3500320NS SN05> at ata2-slave UDMA33
>>> ad6: 476940MB <Seagate ST3500320NS SN05> at ata3-master UDMA33
>>>=20
>>> BTW: That are SATA-disks. Why they are reported as UDMA33?
>>Seems weird. Maybe there are some bios settings turning of AHCI-mode?
>
>Ah, I think I know were to look for that. I'll try tomorrow.

Done, now it looks like that:
| atapci1: <nVidia AHCI controller> port =
0xf80-0xf87,0xf00-0xf03,0xe80-0xe87,0xe00-0xe03,0xb800-0xb80f mem =
0xfcffc000-0xfcffdfff irq 20 at device 10.0 on pci0
| atapci1: AHCI Version 01.10 controller with 4 ports detected
| ad4: 476940MB <Seagate ST3500320NS SN05> at ata2-master SATA300
| ad6: 476940MB <Seagate ST3500320NS SN05> at ata3-master SATA300
| ad8: 476940MB <Seagate ST3500320NS SN05> at ata4-master SATA300

Just for the record:
Board is a K9N Neo V3 with nforce 560 chipset.

Changing this BIOS-setting does the trick:
Integrated Periphals -> On-Chip ATA Devices:
RAID mode [AHCI]

"RAID mode" is a verry clever name for that setting...

thanks,
Hilko