I was trying to install a new wd 4tb powered usb drive to use with my vu+ uno 4k using black hole 3.04. I have done this successfully in the past, but this time I messed up. I set the mount points as media/hdd instead of media/usb. When I restarted the receiver is stuck on the black hole logo. I disconnected the usb drive and restarted the receiver successfully in an attempt to change the mount points back to media/usb, but without the drive connected there is not the option in device manager. I should also say I did not format the disk in the disk format wizard as I should have done. My question is: how can I undo these errors and get back to a position where I can start the installation from the beginning again? Many thanks for any help.