Try solutions in http://aumha.org/a/stop.htm
Either click on the RHS panel shortcut link – ED: Unmountable Boot Volume, or
Scroll down to 0x000000ED: UNMOUNTABLE_BOOT_VOLUME
PS: Probably not good news but your hard drive could be busted?
Try running Dell Diagnostics – tap the F12 key during boot process
Also read this post & try the helpful link, click here
Message Edited by BELL BOY on 08-23-2007 07:50 PM