For some unexplained reason I can no longer boot up Windows xP on my duel-boot system Safe mode also fails. I get the message unmountable_boot_volume. and the uncipherable code STOP: 0x000000ED (0x8AC45E30, 0XC0000006, 0X00000000, 0X00000000)
Ubuntu 8.1 boots fine and so did windows earlier today. I have made no software or hardware changes since!

The Grub menu part for windows reads:
title Microsoft Windows XP Home Edition
root (hd0,0)
chainloader +1
savedefault
makeactive

Any ideas as to what I can do to to resolve this?

0×000000ED: UNMOUNTABLE_BOOT_VOLUME
The kernel mode I/O subsystem attempted to mount the boot volume and it failed. This error also might occur during an upgrade to Win XP on systems that use higher throughput ATA disks or controllers with incorrect cabling. In some cases, your system might appear to work normally after you restart.

Found this explanation at the site below but it offered no resolution.

http://myitkb.net/windows-stop-error-codes/

I'd suggest you go to the support.microsoft website and do a search for yur error code. Enter this part: STOP: 0x000000ED in the search box and click Search, should get a number of responses.

http://support.microsoft.com/search/

Also, this a windows problem.

Thanks yancek,

After a little searching and as windows atempts to boot I agree this is a windows problem therefore this forum is not the place for my question.