Fusion Drive Quirks: If you split up a Fusion Drive you got from Apple, you won't be able to use Disk Utility to format the drives. Disk Utility will detect that the two drives used to be an Apple Fusion Drive and show them in red text.
Not to worry though, as you can install Mountain Lion without a problem. Just exit Terminal after you delete the CoreStorage setup, and choose to reinstall Mountain Lion from the list of choices in Recovery Mode. You can select which drive to install the OS on, and upon booting you'll have access to both your drives. You'll also be able to go into Disk Utility and format them once you've installed Mountain Lion, though if you boot from Recovery Mode you'll still get the same problem formatting them.
This is from the splitting fusion drive tutorial. I'm a bit confused about the end result.
Is it saying that once the drives are split and the OS is re-installed, you will be able to use disk utility to format and partition each drive separately?
Also, when re-installing ML, will the the recovery partition still be there, or does the splitting process get rid of that and not allow it to come back?
Thanks in advance!