This should be easy....I must be missing something. I had a 500gb hard drive in my computer and replaced it with a 1TB hard drive. I did a quick format of the new drive to make a simple volume of 1TB, then restored the computer from a backup image. The computer runs fine, except the backup software left the extra 500gb of the new hard drive as unallocated space. I want to extend drive C: to include the unallocated space. But when try to merge or extend, I get a warning that if I do this, the computer will not longer be bootable. What is the proper sequence of commands for this? Thanks.