Fixing UNMOUNTABLE_BOOT_VOLUME on Windows XP

It failed with UNMOUNTABLE_BOOT_DEVICE STOP: 0x000000ED
(0xaddress,0xC0000006,0x00000000,0x000000)

I searched the net. Found several articles but not really anything that seem 'correct'. Finally, I found an article on Experts-Exchange.com. Well, I could not get to the answers as I do not have an account, but sometime Google's caching feature are very useful...

So this is how I did it based on the answers I found - Start the recovery console. If you do not have it installed - or when that version does not work - like in this case, boot from an installation CD and select R for repair. You can easily mix languages - I used an English CD on
a Danish Windows

Run these command -
chkdsk c: /r /p
fixmbr
exit (to reboot)

That is it.