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Well, I can't remember everything...

Tuesday, 5 August 2014

Changing to ACHI from RAID (Dell T5500)

Replacing 3x SAS disk RAID on a Perc6 controller, with a single SSD connected to the motherboard SATA ports, I needed to perform the following steps; otherwise I would get a BSOD on booting.

Run regedit
Edit the following keys so that the value is 0 instead of 3

(Windows 7)
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Msahci\Start

(Windows 8)
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storahci\Start

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\IastorV\Start

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\atapi\Start 

Reboot, then change the BIOS settings in the from RAID to RAID/ACHI Autodetect
Make sure the SATA ports are enabled in the BIOS

Apply the BIOS settings, then reboot.

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