How do I delete the windows. Old folder?

The following passage is from the Microsoft Website:

How to delete Windows. Old Folder?

If you perform custom installation to installWindows 7Without formatting partitions during installation, the previous versionWindowsThe files used in
Windows. OldFolder. The file type in this folder depends on your computer. Use
Windows 7After a certain period of time (for example, one or two weeks), if you are sure that your files and settings have been returned to the location where you want them to be located, you can delete them by using "Disk Cleanup ".Windows. OldFolder to safely recycle disk space.

Warning

Before using disk cleanup, make sure that all files and settings are inWindows 7Where you want them to be. PairWindows. OldFolder deletion is unrecoverable.

 

1. Click「 Start 」Click to open "Disk Cleanup ".
   In the search box, typeDisk CleanupAnd then click"Disk Cleanup".

   If the system prompts you to select a drive, click InstallWindowsAnd then click"OK".

2. In"Disk Cleanup"Dialog Box"Disk Cleanup"Tab, click"Clear system files".

   If the system prompts you to select a drive again, click InstallWindowsAnd then click"OK".

3. Selected"PreviousWindowsInstall"Check box, and any other check boxes corresponding to the file to be deleted, and then click"OK".

4. In the displayed message, click"Delete file".

 

Web: http://windows.microsoft.com/zh-CN/windows7/How-do-I-remove-the-Windows-old-folder