What are Prefetch Files

Prefetch files are one of the hidden features in Windows XP. They are used to optimize the application loading and booting up Windows. They are a set of temporary files that help in loading Windows and other installed programs faster and in a better way. Whenever you open a program, the Prefetch files save the information required for the program to load. These files help in loading the same program faster the next time you open it. This is because the computer does not have to refer to the original source files all over again.

These files are the intermediate source that provides instant information to the computer that helps it load various software on your computer in a faster and quicker manner. They monitor the files and applications that you use over time. The Windows XP Cache Manager monitors the data that is moving between the disk and RAM and RAM and virtual memory to help the Prefetch operation improve its performance. The maps are then saved to files with '.pf' extensions and in the folder called \Windows\Prefetch.

So whenever an application is loaded, the Cache Manager will first check the Windows\Prefetch folder and find the corresponding map. When it finds one, it will directly access the directory and files in the map. The Memory Manager will be alerted and will be asked to use the information in file to load the data and the memory is coded. This helps the applications and programs to respond faster and quicker. Prefetch files are located in the %windir%\Prefetch folder, that is, C:\windows\Prefetch folder. When you look into the folder, you will find about 138 files in '.pf' format and one layout '.ini.' file.

Can I Delete these Files?
Many people often wonder, that the so many files in the Prefetch folder may take up more computer memory. This means the computer becomes slow to respond. You will even find many sites that show you how to delete Prefetch files manually. However, there is no need to delete them. They do not slow down your computer. They help Windows in optimizing search operation during launch time. These are obsolete files that are rarely used. They are referred by the Cache Manager only when a particular application is launched. And in any case, when the folder reaches about 128 files, it carries out a self-cleaning process. If you delete them manually, it will only make your computer slower.

This was some information related to Prefetch files. I hope this article has helped solve all your questions regarding them.