How to delete the windows. Old folder in Windows 7

After using Windows 7 for a period of time (for example, two weeks), if you are sure that your files and settings have been restored to the appropriate location, you can use disk cleanup to delete windows. old folder to safely recycle disk space.

1. Click Start, type Disk Cleanup in the search box, and then click disk cleanup ". (If the system prompts you to select a drive, select the drive that has just installed Windows, and then click "Next ".)

2. Click "clear system files ". (If the system prompts you to select the drive again, select the drive that has just installed Windows, and then click "Next ".

3. Select "previous Windows installation" and any other file categories to be deleted.

4. Click OK, and then click Delete file ".