Wasn't sure where to post this, so if it's in the wrong area, sorry. I bought a Dell Precision 380 Workstation Desktop about a year ago that had two WD 160GB hard drives, one of which had Win XP installed and the other was blank but formatted to NTFS. I installed Windows 7 Home Premium x64 on the second hard drive so I could dual-boot 7 and XP. Now I've decided to just get rid of XP. I backed up the data on the second hard drive with Ashampoo Burning Studio 10 and went to the Disk Management Utility and told it to format the hard drive. It's drive letter was D. How ever it just said "Windows cannot format the system partition on this disk." Any help would be greatly appreciated.