XP磁盘清理
1.sfc.exe /purgecache
2.Delete %windir%\$ntuninstallq311889$
3.Delete %windir%\driver cache\i386\driver.cab文件
4.清理C:\Documents and Settings\ 各个user目录下的 application data, My documents, Local Settings目录.
All users\Application Data\Microsoft Help 很大,但不能删
User\Local Settings\Temp 很值得一删.
5.%windir%\Installer也可以清理一下
