If you reinstalled vista only to find half your files were backed up into a folder on your C drive called “windows.old” you can easily delete it using the following steps.
- Click Start
- In the search box type disk clean and hit enter to open the Disk Cleanup tool
- Choose “Files from all users on this computer” and choose the drive you want to clean
- After it lists what is available to “clean”, scroll down and select Windows.old from the list of choices. Then delete as desired!