Hi John
ACPI v3.23.01? - Not an ArcaOS install then.
Has the drive letter changed as a result of adding the drive into a system with another drive - the mSATA drive? Could be worth using the dfsee bootable CD to check drive letter assignment and adjust as necessary.
Is the X220 BIOS set to use AHCI or IDE disk access mode? - Using the Dani Driver suggests you have installed in IDE mode but the BIOS may be set to AHCI.
Regards
Pete
It's not ArcaOS, but it's an AN ACPI driver which I bought a year ago.
The BIOS was set to AHCI so I set it to Compatibility and tried again with my OS/2 disk. This time the boot process hung as it was loading DANIS506.ADD. Under Compatibility, Windows, which is installed on the mSata disk crashed immediately...
Can OS/2 run using AHCI?
Should I replace DANIS506.ADD with IBM1S506.ADD? I'm using a 320GB disk.