I'm not sure where to post this, but this seems like a good place. I have a seven month old WD MY Book 3 tb external drive. When I got it, I created three partitions -- 1) Time Machine backup of my Macbook Pro; 2) Carbon Copy Cloner back up of my Mac Mini* and 3) a partition to store misc files. The drive has worked fine for months. Last night, I connected the WD Drive to the Mac Mini, which I was controlling through Screen Sharing on my MBP. I started the CCC backup. Then, I closed the top of the MBP and went to sleep. When I woke up, I had an error message on the Mac Mini that the CCC backup failed because the destination drive could not have been found. And I had a message telling me that I need to eject drives properly. I hadn't ejected the drive, however. Unless shutting the top on the MBP, which was screen sharing with the Mac Mini, somehow acted to force eject the external drive? That wouldn't make much sense to me. Do drives every spontaneously eject? Bigger problem is that the Mac Mini partition on the WD Drive is now unreadable. I don't know what happened, but neither my Mac Mini or MBP can read or write to that partition. The other two partitions on the drive are fine. I tried using Disk Utility and it can't fix the partition or erase it. Is it possible that improperly ejecting a drive can ruin it? I know we're always told to click the eject buton first, but don't people yank out usb drive all the time without ejecting? And, is there any way to get that 1tb of space back? *I don't know why I'm doing CCC instead of Time Machine.