I used the proportional option to clone a 200 GB HD to a new WD 500 GB drive. My OS is Win XP. The operation seemed to go OK because I can open my document files and launch apps from the new drive, but after removing the old drive and setting the bios to show the new drive as the boot drive, the system will not boot. Instead, I get an error message that a system file could not be found. Should I reformat the new drive and clone again or am I just missing a step?