I’m running the My Book Studio II as a single 2TB partition connected via Firewire 800 to a Mac Mini running Lion. On two occasions now the partition simply disappears and will not mount. The drive is visible through Disk Utility and the partition is greyed out. I can reformat the partition and start using it again without issue. However, this has now happened twice in the last 2 months. Thankfully I had a full backup, but this shouldn’t be happening. Any suggestions? The drive is only 6 months old.
I have a similar problem. I was using my My Book LX without any problem with Lion up until today when I decided to add a password.
I am using a MacBook Pro. I have upgraded Lion from Snow Leopard. The transition was OK. The drive and Time Machine worked OK.
This morning, I turned on the security/password feature on the WD SmartWare software. I remounted the drive. Then, my My Book partition disappearted. After I removed the password feature, it came back, but now it appears in grey in DiskUtility but does not mount.
Any help? I hope that I didn’t do anything wrong with the password feature 'cause I don’t have any backup.
I hadn’t done anything with the password. It simply disappeared through normal use. I guess the MacMini started up yesterday and the partition was gone!
And now it’s happened for the third time.