After upgrading to a Samsung 840 SSD drive, I have problems with image backups failing verification when the SSD is plugged into any of the ICH9 SATA ports in AHCI mode.
The motherboard also has two "Gigabyte" SATA ports labeled GSATA in the motherboard manual.
After setting the GSATA ports to AHCI mode, I tried moving the Samsung SSD over to one of the GSATA ports.
When Windows 7 tried to boot, it blue-screened.
Is a special driver necessary? Gigabyte has a RAID driver for the GSATA port, but I'm not using RAID. I tried loading the Gigabyte driver manually from Device Manager, but Windows says the "existing driver is up to date".
I have already made the registry tweaks to enable AHCI (when I installed the SSD I changed the SATA ports from IDE to AHCI)