Windows 7: Delete 'Complete PC Backup' in external usb harddrive

Hi!



I created a 'Complete PC Backup' from Vista before installing windows 7 in external usb hard drive. Now I want to delete that backup and store windows 7's backup.

When I try to delete the folder i get error: 'An errored occured while applying security information to ... Access is denied.' message.

and when I try to delete the the folder inside 'Windows Image Backup' i get an error message.

I tried to get permission but the above error is displayed.

What should I do now?

With the drive plugged in use Windows Explorer, can you see the folder in the tree, if so right click and do delete, if that doesn't work is that all you use the drive for, if so just format the drive.