I was searching for an answer to a consistent disk.sys BSOD issue that was extremely frustrating. I found the answer after almost 2 days of troubleshooting. I hope this post can help some frustrated folks. My system spec:
Core i7 920
Asus P6T v2 Deluxe
LG & Asus DVD writer SATA
Seagate HDD SATA
Windows and the various software would install fine but after that, the BSOD would randomly trigger. But it would trigger 99% of the time when CS4 Photoshop + Bridge was fired up. Based on Google searches, I started troubleshooting by reinstalling the OS on 2 different HDDs and a memtest86+. HDD produced the same problem and RAM was fine.
On a hunch, I tried detaching the LG DVD writer and the problem disappeared. I reckoned it was the DVD writer and exchanged it for an Asus. The problem still remained. I changed settings on the motherboard on the SATA port. It still BSODed.
I tried one last thing. The DVD-R was in Port2 and HDD in Port4. I switched them around. And the BSOD disappeared, I tested for 2 days and had zero errors. Windows must have expected a boot HDD to be the 1st in SATA sequence and not the DVD writer.