Until I get raspberry pi, I'm stuck running my BFL singles on my main rig (W7). I have a 10 port hub hooked up to connect them all. I have all of the drivers installed to use COM ports, and my first 5 singles take up ports 5-9 and are working fine. My problem is using ports above 9 (specifically 10-12). They are not being used for anything else according to device manager, but when I point my singles to those ports, CGminer wont recognize them. I'm using .bat files to start them, and everything works fine on the first 5.
Can anyone think of a reason that COM ports above 9 would cause problems? I tried reassigning the other ones to ports 2-4 (which were already in use), but that seemed to bring on weird BSODs. So I'm going back to trying to get the unused ports to work. Any ideas are appreciated.
Um, the OP is pretty old so I'm not sure if you already resolved this. But take a peek here: https://bitcointalk.org/index.php?topic=28402.msg874683#msg874683
Basically for COM ports above 9 you have to use the 'longhand' notation. Something like this:
cgminer -o <pool> -u <user> -p <pass> --disable-gpu -S \\.\COM12
That should get you going.