Durak,
I had the same problem but I figured it out.
I originally tried to just do it all in one step and mount c as c:\blood and that doesn't work.
What you need to do is mount c as c:\ and then change directory to blood and run bb from there. That means, one step at a time, you do this...
mount c c:\
c:
cd blood
bb
Game should work fine then
Happy blitzing.