I am trying to format the harddrive of a Compaq Pressario laptop but have having some trouble. I type Format in the command prompt and it says the usual "All data will be lost" etc. I press Y to carry on BUT then it says it cannot carry it out as there is a process running and do I wish to dismount the drive to try and continue. I press Y but it says it cannot cary out the format. I then tried booting in safe mode and formatting from there. This time it begins to run the format but stops at 21% and re-boots. I then made a MS-Dos boot disk but the format command is not there, only the Del command is. (The computer is running XP) I now have no idea. I have never seen this happen before. Can anyone help? Many thanks!