For no known reason, my USB 2.0 MyBook Essential 2TB running under Windows 7 Pro SP1 has stopped being writeable. I can still read without difficulty, but any attempt to write to the drive generates the Windows message “cannot read from source.”
I realize that the message suggests that the problem is from the source drive and not the MyBook, but I have no difficulty writing to/from any of the other drives in my system. The MyBook also fails the SmartWare Quick and Complete drive tests (with no additional error messages beyond ‘fail’).
I have tried other USB cables and checked the power supply – no obvious problems. I have tried several repowers as well as Windows’ disk checking utility.
I am now backing up all the data to the other drives on my system (and a few smaller capacity externals I have lying around) preparatory to downloading the latest firmware (if that works) and then reformatting (if that works).
Any other suggestions? TIA.