Before applying this tweak, first check the amount of internal memory (RAM) installed on your computer.

Go to the desktop, select "My Computer" with the right-click of your mouse, then select "properties" and on the Tab "General" you will see the amount of RAM-memory installed displayed (see picture 1).

Picture 1

To speed up your Disk cache follow the next steps:

1. To open the Registry Editor click on the Start button on your taskbar, then click on Run and type "regedit" and click on OK to start the utility (see picture 2).
   
    

   Picture 2

    

2. Expand HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/Session Manager/Memory Management/IoPageLockLimit (see picture 3).
   
    

   Picture 3

    

3. Double click on the key "IoPageLockLimit"  and change the value data in Hex depends on the amount of installed internal memory on your computer (see picture 4 and table 1 below).
   
    

   Picture 4

   Table 1

   64MB	:	1000
   128MB	:	4000
   256MB	:	10000
   512MB or more	:	40000

4. The modifications you made will be in effect after you reboot your PC.