I recently purchased a BX300 SSD to replace my disk drive in my Mid 2012 13" Macbook Pro. I have formatted the drive to be OS X Extended Journaled, and when I go to restore/clone from my current hard disk drive it gives me the following error:
Source volume is read-write and cannot be unmounted, so it can't be block copied.
I did this in both recovery mode and the regular booted OS with no luck. Any suggestions? I am replacing the stock 750gb hard drive with the 480gb Crucial BX 300 SSD.