I have a 2TB MyBook Studio II configured as RAID 1. It was connected to my Airport Extreme as NAS.
The drive was working like a champ for a number of months, then it suddenly failed to mount.
I connected the drive with Firewire 800 to my MacBook Pro and it still wouldn’t mount, so I tried some diagnostics and here’s what I found:
Disk Utility, First Aid, Verify Disk and Repair Disk all did not work.
“Error: Disk Utility can’t repair this disk. Back up as many files as possible, reformat the disk, and restore your backed-up files.”
WD Drive Manager 2.2.6 says:
– Used Space 0%
– Tempurature Condition OK
– RAID Status Healthy
Can I assume that only one disk is failing?
If only one disk is failing, how can I determine which disk and how do I replace it?