First of all, this tweak only apply to those who only have one Hdd on their primary IDE channel (nothing else on device 0 or 1) and a CD-ROM and/or DVD-ROM på secondary IDE channel. Each time you boot Windows XP, there’s an updated file called NTOSBOOT-*.pf who appears in your prefetch directory (SystemRoot%Prefetch) and there’s no need to erease any other files as the new prefetch option in XP really improves loading time of installed programs.

Follow the following steps:

1. Open notepad.exe, type “del c:windowsprefetch tosboot-*.* /q” (without the quotes) & Gem som “ntosboot.bat” i C:
2. From the Starte menu, select “Run...” & type “Gpedit.msc“.
3. Double click “Windows -indstillinger” under “Computerkonfiguration” and double click again on “Lukning” in the right window.
4. In the new window, click “add“, “Gennemse“, locate your “ntosboot.bat” file and click “Åben“.
5. Klik “OK“, “Anvende” og “OK” once again to exit.
6. From the Starte menu, select “Run...” and type “devmgmt.msc“.
7. Double click on “IDE ATA/ATAPI controllers“
8. Right click on “Primary IDE Channel” and select “Egenskaber“.
9. Select the “Avancerede indstillinger” tab then on the device 0 or 1 that doesn’t have ‘device type’ greyed out select ‘none’ instead of ‘autodetect‘ & Klik “OK“.
10. Right click on “Secondary IDE channel“, select “Egenskaber” and repeat step 9.
11. Reboot your computer.