A Microsoft Windows NT and Windows 2000 command that can be used to uncompress files from the distribution files on the Windows NT compact disc.
Use this command to perform a system recovery when a missing or corrupt Windows NT operating system file is preventing your system from booting. Expand is an MS-DOS–based utility.
expand d:\i386\sol.ex_ c:\winnt\system32 installs Solitaire the hard way - off the Windows NT compact disc.
The Windows NT Resource Kit includes a Windows NT–based expansion utility called expndw32.exe that can be accessed from the File Tools program group in the Start menu.
For the full syntax of this command, type expand /? at the command line.