Using Roadkil's Unstoppable Copier (from Hiren's BootCD), I began copying 227GB of a 500GB drive (containing Windows Vista + documents + 9GB HP restore partition) onto a freshly bought and formatted (NTFS) 1TB WD drive. After a few hours, the entire 1TB WD drive indicated it was full and Unstoppable Copier said it still had more files to copy. How can 227GB take up all 1TB of the WD drive? Should I reformat the drive and use different copy software?