Speed Up XP Start up Time

There's a simple way to speed up XP startup:
That is by makingyour system do a boot defragment,which will put all the boot files next to one another on your hard disk.
When boot files are in close proximity to one another, your system will start faster.
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On most systems, boot defragment should be enabled by default, but it might not be
on yours, or it might have been changed inadvertently.
To make sure that boot defragment is enabled on your system, run the Registry Editor and go to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\BootOptimizeFunction
Edit the Enable string value to Y if it is not already set to Y. Exit the Registry and
reboot. The next time you reboot, you'll do a boot defragment.