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 on the 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) & save as “ntosboot.bat” で C：
2. From the 始める menu, select “Run..。” & タイプ “gpedit.msc“。
3. Double click “Windowsの設定” under “コンピューター構成” and double click again on “シャットダウン” in the right window.
4. In the new window, click “追加“、 “ブラウズ“, locate your “ntosboot.bat” file and click “開ける“。
5。クリックします “わかりました“、 “適用する” そして “わかりました” once again to exit.
6. From the 始める menu, select “Run..。” and type “devmgmt.msc“。
7. Double click on “IDE ATA/ATAPI controllers“
8. Right click on “Primary IDE Channel” and select “プロパティ“。
9. Select the “高度な設定” tab then on the device 0 or 1 that doesn’t have ‘device type’ greyed out select ‘none’ instead of ‘autodetect‘ & クリック “わかりました“。
10. Right click on “Secondary IDE channel“, select “プロパティ” and repeat step 9.
11. Reboot your computer。