Cant Clone OSX with Yosemite 10.10 – Clonezilla

I’am a long fan of Clonezilla, which I have been using many years cloning
both Macs & PC

With Yosemite, Apple made a change to the disk partition system
From the old HFS+ to CoreStorage, which makes it impossible to use Clonezilla to clone Macs.

The CoreStorage system is supposed to work better with FileVault (Apples file encryption system)

Its possible to make a image of mac running Yosemite (with CoreStorage), but once trying to clone the image

to a other Mac this will boot up with a “forbidden sign”

The work-a-round for now is to convert from ”core storage” to HFS+
before cloning, then Clonezilla etc.will work again.
{ Do this on you own risk – remember to backup 🙂 }
Open ”Terminal”

Write:
diskutil cs list

(you will see something like this)
Logical Volume Group 8B0FF229-63B8-428E-8671-A3B174538C6A
=========================================================
Name:         SSD
Status:       Online
Size:         119174365184 B (119.2 GB)
Free Space:   18907136 B (18.9 MB)
|
+-< Physical Volume FDFD9954-D68A-41A2-ADC5-28352E3F74BD |   —————————————————- |   Index:    0 |   Disk:     disk0s2 |   Status:   Online |   Size:     119174365184 B (119.2 GB) | +-> Logical Volume Family EA6FB1F0-9A71-4631-8886-540BBA5D3399
———————————————————-
Encryption Status:       Unlocked
Encryption Type:         None
Conversion Status:       NoConversion
Conversion Direction:    -none-
Has Encrypted Extents:   No
Fully Secure:            No
Passphrase Required:     No
|
+-> Logical Volume B4283DB8-1F41-4E11-8192-9097C39CD332         —————————————————
Disk:                  disk1
Status:                Online
Size (Total):          118803136512 B (118.8 GB)
Conversion Progress:   -none-
Revertible:            Yes (no decryption required)
LV Name:               SSD
Volume Name:           SSD
Content Hint:          Apple_HFS

In Terminal write:
diskutil coreStorage revert {logical volume name}

e.g for above:

diskutil coreStorage B4283DB8-1F41-4E11-8192-9097C39CD332 

This process will take at most 10 seconds – once this is done you can clone

to a image which will boot on a new Mac.

For more info on Yosemite & CoreStorage- see this article at Arstechnica