Recently installed Win 7 64-bit and used Drive Backup v9 to make images. I had to restore one of the images and after rebooting and starting the restore process I get the following error from Drive Backup: "Hard Disk 3: I/O fault". Disk 3 is the USB disk used with ReadyBoost. The only way to get past this is to remove the USB disk, reboot the machine, and restart Drive Backup and the restore process. This is the exact same hardware and exact same configuration used with Vista 32-bit. In this case, Drive Backup always worked well and there was never any issues with disk 3. The only change is switching to Win7 64-bit. BTW - The disk is fine. I've actually swapped out the USB disk and swapped ports with different drives (including a brand new drive (never used)) and am still having the same issue. Any help would be appreciated.