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View Full Version : Filevault 2: "There was an error preparing the Time Machine backup disk.."




Rizvi1
May 30, 2012, 08:14 PM
I posted this over at discussions.apple.com (https://discussions.apple.com/thread/3222378?start=105&tstart=0#18515047), I thought I would post it here too.

I have a MacBook Pro that has FileVault 2 turned on. I wanted to back up my data to an external hard drive.

I Have a 320gb older Western Digital Hard Drive. I connected to it via USB (will try Firewire next - but need to find my Firewire 400 to 800 cable). Right now I have Mac OS X Lion 10.7.4 and I believe that on 5/23/2012 when I Tried this last I had that same version. If not, it should have been 10.7.3.

First Tried to encrypt within Time Machine by selecting "Encrypt Backup Disk"

https://discussions.apple.com/servlet/JiveServlet/downloadImage/2-18515047-120326/450-530/Screen+Shot+2012-05-23+at+3.49.23+PM.png

Got the error that says "There was an error preparing the Time Machine backup disk... Invalid Request"

https://discussions.apple.com/servlet/JiveServlet/downloadImage/2-18515047-120325/450-537/Screen+Shot+2012-05-23+at+3.51.44+PM.png

Then went into Disk Utility next and tried to encrypt from there:
(Selected "Mac OS Extended (Journaled, Encrypted"):

https://discussions.apple.com/servlet/JiveServlet/downloadImage/2-18515047-120327/450-536/Screen+Shot+2012-05-23+at+3.52.11+PM.png

Got a "Disk Erase failed with the error: Unable to create a new Core Storage logical volume group."

I did the verify disk and repair disk, and tried again, still no luck.