Got a Humax PVR 9150T and the recorded programmes have disappeared from view but are still taking up space on the HDD, so have seen this means the file system's become corrupt and there's the option to try using Humaxrw to transfer the data to a computer, then format the Humax drive and transfer the data back.
I've removed the Humax drive and got sorted with the SATA to USB cable, but not sure how to use Humaxrw on my Linux computer. Have been to this page:
https://myhumax.org/forum/topic/humaxrw and downloaded humaxrw-1.15-linux.tar.gz at the bottom, then extracted the file, but not sure what to do from there. It doesn't automatically start up when I plug the cable into the USB port at the back of the computer and switch the cable on, and typing "humaxrw -h" into the terminal says the command's not found.