If you feel there's nothing left to loose, just tell me and I will email you a dos based flashing utility for yamaha drives, and the firmware for the CRW2100E. As I've got a Plextor I don't know if it will work.
You will need to make a boot disk and add the files there. Remember to read the readme.txt, it was intended for other yamaha drives, even if the readme refers to one particular drive, the .exe is generic, it may work with yours, just tell it he proper ide channel and if your unit is master or slave.
Dammit, I am gonna post it in my web site for you...
<A HREF="http://www.geocities.com/juanmigalindo/yamahamod.zip" target="_new">http://www.geocities.com/juanmigalindo/yamahamod.zip</A>
Please tell me once you have downloaded it as I think the geocities policy does not allow you to store files.
SEARCH FIRST, THEN POST