I am having 2 issues: I am running Windows XP SP3. The 3TB drive is an external drive and not my system drive...used just for additional storage. 1. The tool does not recognize the entire 3TB of the drive. It only recognizes 2047.9GB The drive is a WD RED 3TB (WD30EFRX) 2. I tried anyway to make a partition on the useable space and it bombs out with an error: "Operation Failed - Can't mount partition" Error Source: Hard Disk Manager Error Code: 0x1004c Any help would be greatly appreciated!!