C:\Windows\Prefetch

[Kuckeliku]

som spinnoff på trögstartad datortråden
vad är det för filer i den här mappen?

 

[nidron]

Sv: C:\Windows\Prefetch

Det här beskriver det nog ganska väl:

Each time you turn on your computer, Windows keeps track of the way your computer starts and which programs you commonly open. Windows saves this information as a number of small files in the prefetch folder. The next time you turn on your computer, Windows refers to these files to help speed the start process.

The prefetch folder is a subfolder of the Windows system folder. The prefetch folder is self-maintaining, and there's no need to delete it or empty its contents. If you empty the folder, Windows and your programs will take longer to open the next time you turn on your computer.

http://windowshelp.microsoft.com/Windows/en-US/Help/0ec5b471-ed65-43c4-a59b-c1fd975c42621033.mspx

Myth - "Deleting the contents of the Prefetch folder improves performance."

Reality - "Every time you delete an application's Prefetch (.PF) file you will cripple that application's load time the next time you go to launch it. This can temporarily increase load times by as much as 100%. For one thing, XP will just re-create the Prefetch (.PF) trace files anyway; secondly, it trims the files if there's ever more than 128 of them so that it doesn't needlessly consume space. However you do not regain optimal application load times back until after the second time you launch the same application due to the Prefetch (.PF) trace file being re-created. Prefetch (.PF) trace files are not a cache and are not preloaded into memory upon windows startup. They are never even accessed until you launch an application. Only one Prefetch (.PF) trace file per application is created. There is never ANY reason to delete these files. Cleaning the Prefetch folder is actually a temporary self-inflicted unoptimization. Why you would want to deliberately hurt your PC's performance I have no idea."

http://mywebpages.comcast.net/SupportCD/XPMyths.html(Fanns inget "anchor" att länka till..)