1. Backup any folder or files before you process.
  2. First search for sapcar.exe. Its usually located at \usr\sap\sid\dvebmgs00\exe
  3. To uncar your *.sar files, run this command
    SAPCAR -xvf  dw_294.sar
  4. All files in dw_294.sar will be uncar into the directory where sapcar.exe is located.

  5. To list a file (preview) you may execute
    SAPCAR -tvsf dw_294.sar > c:\list.txt

  6. This way, it will not uncar any files but list out the files for you in list.txt.
    Find the file in drive C: