Sylbaryl

Hello everybody, I have LaunchBox installed on the pc, with many games on an external hard drive. It plays fine and all, but I have one issue: when launching BigBox, it won't load until I unplug my HDD. I just have to replug it once on the interface, and I can run my games without any problem. It is very annoying, as you might imagine. Any way I can fix this? Thank you!