Boot XP from an External device

Many of u mite have faced a problem of missing Boot.ini file. The computer was not able to boot because it was not able to find the proper location of the boot files, thus creating a problem. But for this simple reason, you cannot format your computer, and when you know its just a small file. What can then be done?
Usually when this file is deleted, it automatically rewrites a new file, and this booting the system. But in this case, it was not. Whats the solution then ?

Well, to this problem what can be done is booting XP from a external device, be it Floppy, Pen drive or even a Disk. You just need to copy the booting files into these devices, and all is then controlled by XP.
You need to have a second computer, in case your computer is down too. But if it is healthy and doing good, prepare a copy NOW !!!

Firstly format your device like Floppy, or Pen drive in a FAT File system, and then copy "ntldr" and "ntdetect.com" files from the i386 folder of XP disk. Then you need to copy your Boot.ini file to the drive to make it bootable.
That's it You can then boot your computer from any external device.