Mybook studio raid 0, empty after installing Mavericks

I had this problem years ago. First, make a complete backup on a new drive (better two!).

Then find the old WD software which caused the problem and remove it.

I see no reason why you shouldn't be able to continue using the concerned drives afterwards.

Here are some threads with more details:

• https://discussions.apple.com/thread/5475136

• https://discussions.apple.com/thread/5475611?answerId=23505869022#23505869022

• http://community.wd.com/t5/External-Drives-for-Mac/External-Drives-for-Mac-Exper iencing-Data-Loss-with-Maverick-OS/td-p/613775/

• https://community.wd.com/t/all-data-gone-on-my-book-studio-ii/20534

• https://community.wd.com/t/wd-kill-my-my-book-studio/20624

NO - it is not just RAID; I've recently had this disk problem with several new Seagate External drives, which I have always reformatted in HFS+ from the start. I have also been running Mavericks throughout this process and haven't made any major upgrades.

I have only come upon this thread by chance (through my efforts to troubleshoot said problem), which has taken me to address Seagate, and Micromat - who make TechTool Pro - who were concerned about the 'losing directory information', but did point me back to Apple - correctly.

I guess the issue has been addressed in a way by Apple, because there have been three new OS releases since Mavericks, and I trust this serious situation has been remedied in those…? But that doesn't help those of us who were reluctant to upgrade for various reasons - mine being other application compatibility - and sheer frustration with having to bend to each and every upgrade that comes out each time more frequently - and it always results in some major change of architecture somewhere. We end up spending more time troubleshooting these computer problems than using them productively for their rightful purpose…

I was actually wondering if the opposite is true: should I reformat these drives in a cross-compatible format such as FAT-32 or NTFS and use Paragon?? I really want to go back to Snow Leopard!

Same thing happened to me. MyBook Studio II in RAID 1 and two other a Western Digital external drives all mount with zero items after upgrading. I have tried connecting to different machines and also various drive recovery software with no success. These drives had my data, plus all of my backups.

I have a WD RAID MyBook as well, and have the same issue. After installing Mavericks yesterday, it appears on the desktop with zero items, despite being my Time Machine backup for several years. I now have no backup drive. What's up Apple?

Same thing happened to me with a WD My Book Studio Edition II 6TB. After calling WD numerous times they gave up and asked me to ask Apple what Maverick does to a raid drive and to try recovering my data with a recovery software. Right now I'm trying Disk Drill, but no file shows. Ten years of 5TB archive gone at the moment, with only a partial backup. Panic situation.

Disk Drill's deep scan shows some files are still on one of my drives. There is no folder structure or file names are missing. Disk Warrior didn't do anything for me.

Just plugged my MyBook Studio RAID back in to my laptop having upgraded to Mavericks - it houses all of a previous computer's files and all my time machine backups - I cannot access anything now!! This is pretty desperate!

Does anybody know if this is reversible or is this pretty much it? In that case does anybody know a recovery software that will recover original directory structure and file names? Someone mentioned Stellar Phoenix Mac Data Recovery but the app keeps quitting during initialization.

Experiencing a similar problem after upgrading to Mavericks, my LaCie external hard drive is no longer visible, so I can't mount it.

Count me in among the affected. Western Digital MyBook used for Time Machine, totally empty.

I got the same problem. One MyBook Studio II and one MyBook affected. Both are shown as empty in Finder. 😠

Apple, please reply to our problems!

I have the same problem. My WD 6TB My Book Studio II with RAID 1 reads empty in finder and any other program after updating to OS X Mavericks. When I updated my OS I made sure none of my external drives were connected in case anything went wrong I wouldn't lose 5 years of work. After the update was complete and I plugged my WD drive back in and found nothing I contacted WD's Tech Support as well as an IT professional I used to work with. Neither were able to help. I contacted a number of data recovery specialists and recieved a number of quotes starting around $1200 and up. Imagine my surprise when I came across this post with so many other similar issues all seeming to stem from OS X Mavericks. At this point I am afraid to connect any of my other external drives for fear they may also lose all the information I have stored.

APPLE PLEASE FIX THIS AND HELP US RETRIEVE OUR DATA.

Thank you

I don't claim to be any expert but my guess is that Apple's (software?) RAID took over and reconfigured the RAID. WD Drive Manager is obviously imcompatible with Mavericks as it appears multiple times in the menu bar everytime the drive is mounted and does not go away without a restart. The Empty/"MyBook" state of the drive is stuck no matter where I tried it (OS 10.8 and 10.6 with and without WD software).

I chatted with a higher level Apple tech support and sent him links to this and another thread (https://discussions.apple.com/thread/5475136?start=30&tstart=0). The end result at the moment was a low level data recovery recommendation which I will try to avoid as long as I can.

I'm holding my breath waiting for a solution from Apple and/or WD where my old volume and data will magically reappear.

the cause of this issue is known

contact WD about a firmware update

or attach it to a mountain lion Mac for data retrieval

or last resort extract the HD from its enclosure for data extraction

Peace