Hi!
I have a bit elder 1TB MyBook disk, with tow active partitions. The first is 900 Gb for TimeMachine, and the remaining is for “playing” with mac running from external drive installation.
Suddenly TimeMachine partition is not mounted, neither on my or my wife’s mac. I tried to mount, repair, erase, unmount from Disk Utility, but each operations fails - the system cannot access the device.
What is interesting, that the drive works continuosly on something, what I cannot recognise by the lsof command from terminal.
The second partition cannot be unmounted, it is never finishing - I mean i stoped waiting after 15 minutes.
The mac machines are running 10.9 and 10.8 - same result on both.
If I disconnect the drive from the USB it stops the game of active working.
I also tried WD Firmware updater, but it stuck waiting for the drive with no response.
No errors I found on the console.
It seems to me, that the drive is trying to be mounted but it goes to a kind of infinite loop.
Please let me know if you have a tip, what to check or do to resolve the problem.
