I have a one Terabyte hard disk drive (USB3) that suddenly will not mount. My local computer expert (Windows only) had a look at it with his software and said that it is not a hardware problem.
What should I try in order to check or possibly recover it? It does not have SMART capability. I intend to use it for automatic daily backups, and the data on it is the result of my preliminary experiments so is not really needed any more, making my last option to re-format it.
The problem occurred at the end of my attempts to start an automatic daily backup using rsync, which finally worked satisfactorily last evening. However my computer (Linux Fedora 20, with zshell and MATE desktop) would not shut down. This has happened a couple of times before, and it had got there in the end when I left it alone.Yesterday I left it running for more than two hours before I turned it off with the power switch.
I am hoping that I will be able to see what went wrong for the checks. The "Properties" box says that my home directory has "624,332 items, totalling 51.7 GB (some contents unreadable)". Is it possible that I switched off before the data had been transferred?