Run //server1/xppro/winnt32 /duprepare://server1/updates. -2. run //server1/xppro/winnt32 /dushare://server1/updates. -use the /duprepare and /dushare switches with the winnt32 command to perform an installation of windows xp professional from a network share using dynamic updates downloaded from microsoft. for example, if tiffany had downloaded the dynamic updates and extracted them to the \\\\server1\\updates share, she would do the following to install windows xp:run \\\\server1\\xppro\\winnt32 /duprepare:\\\\server1\\updates to ready the files for use. run \\\\server1\\xppro\\winnt32 /dushare:\\\\server1\\updates to start the installation with the downloaded update files. the /dudisable switch prevents the dynamic update from occurring. the update.exe command and the -s switch are not required because you are not slipstreaming a service pack. you also do not need to specify a source for the installation files when running winnt32 from the \\\\server1\\xppro share (that would use the /s switch).