I’ve read as many of the data loss reports I could find in the Western Digital forums, Apple support forums, Macrumors forums, etc.
The recurring factors are:
- MacOS Mavericks 10.9
- WD Drive Manager / Raid Manager software installed
- data loss after a restart
- drives initialised to a single MyBook partition with exposed EFI partition
- loss of all existing partitions and directory structures
Ignoring my power cut and SMC reset… all of the well documented reports are identical to mine. Data loss occurs after a restart.
The worst affected seem to be MyBook Studio customers who are the most likely to have WD Drive Manager / RAID Manager installed.
I still have all of my Western Digital drives separated and have attempted manual recovery on 1 of the drives from a mirror set.
Now that this is a recurring documented issue experienced by many others my hope is that Western Digital and Apple will work together to isolate the cause and assist in data recovery for those affected.
