I have a nexus 7 2013 with 4.2, rooted.
I was using stickmount to mount a usb HD and the nexus crashed and now after rebooting (a number of times)
I have sdcard/usbStorage/sda1/nexus directory and I can not delete this dir and this is messing up trying to mount any drives now.
both the nexus and the sda1 directories give a permission denied when trying to delete them. I also tried as root with the same result.
any ideas how to get rid of these ?