Boot XP from an External device

By VJ | May 24, 2008

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Hello guys, It’s Readers Query time again. This time one of our reader, Anju, 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 !!!

Boot XP

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.
If in case you need to write the whole code of this file, Follow this small tutorial for the same.
That’s it You can then boot your computer from any external device.

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10 Comments so far
  1. Jonny Bonny May 27, 2008 4:44 pm

    This is excellent! Been looking for something like this. I wonder if its possible to “hack” my USB drive to run Windows XP directly from it?

  2. abhishek May 27, 2008 8:56 pm

    nice tip buddy.

  3. VJ May 27, 2008 9:07 pm

    @ Jonny : Running XP directly from USB, Never tried, its worth giving it a shot. I will try it, and if successful will post about it. Stay glued.

  4. Hunar May 27, 2008 9:58 pm

    hey VJ, you can also rebuild boot.ini using bootcfg /rebuild in recovery console. It happened to me once.
    Thanks fr the tip :)

  5. Nirmal May 28, 2008 3:03 pm

    Nice tip buddy, indeed we cannot reinstall all the time for small reasons.

  6. Aseem Kishore May 29, 2008 11:19 am

    This is actually a very good thing to do for backup purposes. Those files seem to become corrupt quite a bit!

  7. VJ May 29, 2008 11:51 am

    @ Hunar : Yes, it can be done, but once it failed for me, so I trust coding it directly, which never fails.

    @ Nirmal : True, we cannot, for these small issues, we need to have these stuff handy

    @ Aseem : These files are used a during boot up, and thus they are most affected during improper shutdown.

  8. Madhur Kapoor June 1, 2008 2:26 am

    Nice tip buddy. Will come in handy while correcting crashed installations.

  9. […] Techiesden tells us how to boot XP from an external device […]

  10. moin July 11, 2008 3:07 am

    nice trick there, it can come very handy if you make a spare usb drive for hard times

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