Most users are unfamiliar with the command line, let alone what to type in when they open the command prompt window.
Sure, it's nice he tells you how to analyze the gw.dat file; but there is nothing that tells you how to properly defragment it. Most users will not understand how to change to the directory where contig.exe exists and then how to enter the path to defrag the gw.dat file.
So now you ask,
"How can I properly defragment the needed files?" Simple. The following instructions will help you download the necessary freeware tools to clean up your system and optimize it.
Download Power Defragmenter GUI and save it where you can find it easily (Such as the Desktop). Unzip PowerDefragmenterGUI.zip. Unable to decompress the zip file? You can use 7-Zip to decompress files with ease. Download Sysinternals' Contig to the same location you saved Power Defragmenter GUI.
NOTE: This process can take anywhere from minutes to hours! It is best to let the defragmentation process complete for optimal performance. If need be, let this run overnight.
The process is all automated and will help your system greatly. Should any questions arise, please contact me.
Kind regards,
Tarun