Comment 38 for bug 604335

Heh, just thought "what if you have to set the serial number from the command line". Then I went to check and

nutznboltz@lakshmi:~$ qemu --help | egrep 'drive|serial' | head -2
-drive [file=file][,if=type][,bus=n][,unit=m][,media=d][,index=i]
       [,serial=s][,addr=A][,id=name][,aio=threads|native]