# My XP computer is trying to boot into Linux

This has happened twice now. I wake in the morning (yes noon is morning) I go to my computer to find it is stuck in the middle of rebooting. The last few lines of the log show the following.

GRUB loading stage 1.5.
Error 21


Isn't GRUB a bootloader for Linux? I've messed around with Ubuntu on this computer, but my last OS install was a clean format and install of XP. I've never actually seen this come up when I personally reset the computer, only a couple of times when it's reset on its own late at night.

I'm worried that I have some virus that is trying to reboot my computer into an instance of Linux that I didn't install. Has anyone seen something like this before? How can I fix it?

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The MBR probably wasn't fixed correctly. A typical fixmbr doesn't always fix things properly, but MbrFix is what I'd recommend. Simply use this command:

C:\path\to\mbrfix.exe /drive 0 fixmbr /yes

replace C:\path\to with the path to the mbrfix program.

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now that sounds pretty scary, John: "However, users can accidentally delete partitions and important data." – Molly7244 Dec 13 '09 at 21:26
If you specify the wrong drive. A windows CD isn't needed for this method either. – John T Dec 13 '09 at 21:29

How can I fix it?

boot from your Windows XP CD into the Recovery Condole and use the following command:

fixmbr

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