When you start, you will choose a new installation, wait for the installation file, the computer is restarted, the computer is restarted, select Enter the Recovery Console, the console will prompt you to log in to which Windows XP installation, generally select the default "1", Type the system administrator password, you enter the Windows directory of the console, type "bootcfg / add", the console will scan the Windows installation, after a few seconds, the scan is completed, prompt to select the installation to add, select "1", Then prompt to enter the load identifier, you can enter "Microsoft Windows XP Professional", prompt to enter the OS load option, type FastDetect, Enter, type "exit", restart your computer, you can see the familiar dual boot menu is back. After entering the system, the files and folders with "$" in all partitions are all deleted.