I have a 2012 Mini with a fusion drive that won't boot from a usb cloned drive. It came with 10.8.2 pre installed. I have zapped the PRAM and reset the SMC. Any thoughts?

When I tried using a recently downloaded (from the App store) version of MtLion 10.8.2 (12C60) I could NOT get the new MacMini to install or boot from a USB I had previously made. I was however able to use the Recovery Mode of the MacMini to create a bootable SSD which I had installed. The problem arose when I went back into Recovery DU as it saw the seperate drives (SSD & HD) as a broken Fusion Drive. Interestingly DU from the boot volume had NO issues and reported NO faults. It was the Recovery DU that identified the faulty Fusion Drive configuration. At this point I am definately out of my depth but my speculation is that the Recovery Volume is being used in some fashion to form the method or pattern that DU assigns files to the drives, System Report sees the drives as seperate volumes with all their individual characteristics.
Disk Utility did not make a bootable USB, I don't have or use CCC or Super Duper.
Here is the longer version I've been compiling:
Having bought a late 2012 Mac Mini(6,2) i7 2.66GHZ with the standard 1TB 5400 HD and 4GB of RAM (base model) I immediately decided to install a Mercury Elite 6g 240GB SSD and up the RAM to 16GB. I received both shipments on the same day and had all my new toys in front of me. After following the video advice on OWC’s website for the installation of the second drive I started the mini and formatted the SSD to accept the OS from Recovery on the original HD. This MacMini shipped with 10.8.2 (12C2034) as the OS, the normal build of 10.8.2 is (12C60). Having used Recovery Disk Utility to format the SSD it came back with an error that DU could’t Repair. I went ahead and installed the OS on the SSD and the Mini booted normally from both drives. The issue I encountered with this setup was that iMovie encountered an “unexpected error” and would not save a completed project. I therefore decided to figure the drive issue out because I suspect the new Fusion File Management software didn’t like my configuration with drives that Recovery DU saw as needing to be “fixed”. After spending some time on the phone with both OWC and Apple Support I took the plunge and used Internet Recovery Disk Utility and allowed both drives to be “fixed” after which DU created a Fusion Drive (Logical Drive) that I then ran Repair Disk on and it showed up as a single drive in DU. It works perfectly as described by Apple’s site:
http://support.apple.com/kb/HT5446
Having checked the Link Speed and Negotiated Speed they both show as 6g so I’m pleased not to have lost performance due to it being fuzed to a 3g 5400 drive. The biggest drawback is that Apple’s Fusion Management only allows for 1 additional partition and I would have preferred more than that.
I have sourced some additional information here:
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.macsales.com/15619-special-note-for-adding-an-ssd-to-a-2012-mac-mini ?
http://blog.fosketts.net/2011/08/05/undocumented-corestorage-commands/
If anyone has a factory Fusion Drive could you please post the Link and Negotiated Speeds of both drives? This information can be found in Apple > About This Mac > More Info… > System Report > Serial ATA and the drives should show up as discrete drives with their info listed separately.

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