Originally Posted by
Appzalien
You cannot convert C while you are running windows. You can convert D or E from within windows and unless any of your apps that are running run from D or E it would not matter if you have something running.
You cannot convert C from a dos prompt with say a win98 boot floppy because it doesn't have that capability. Typically what would be the case is your old drive C, running win 98 or XP fat32, would be removed from the system, a new hard drive is mounted and XP ntfs is installed. Then and only then do you hookup the old drive which will become D and from within windows running on C open the run box and convert D to ntfs.