RAD (disk) bug

I wonder if this is across OS 4.1 Final E., or only on some hardware or configurations, I'm using A1XE.

So 'mount RAD:' followed by 'remrad RAD: force' seems fine. However, if I mount and reboot and then try to remove it, it will come up with a DSI. Then, if I reboot the same way again, without pressing the reset button or picking that full boot option in the error requester, the system never boots up.