Clone of drive doesn't have the right name on option-restart
I have created a clone (with Carbon Copy Cloner) of my principal drive in anticipation of both OSX 10.9 and because of Adobe's recent changes for their software (I need to keep the current versions of Adobe CSS) in case I decide to discontinue the monthly update charge we are now stuck with).
The problem is when I do a option-restart to switch the system I want to boot from, the choices shown for drives has a different name for the cloned drive from what shows in the finder. The finder name is "Mtn Lion Bay 2" (a partion on disc bay 2 - Snow Leopard is on the other partition) but when doing the option-boot, the name shows as "EFI boot". Disk utility also shows the name as "Mtn Lion Bay 2".
I have cloned drives before, but don't remember this happening.
Mac Pro, OS X Mountain Lion (10.8.3), 2.8 GHz Quad core, 6 GB ram