In another operational mode, a boot order may be specified for {HEAD ~ two or more mass storage devices} within {TAIL ~ a computer system} by determining for each mass storage device type whether more than one mass storage device exists within the computer system 
within
In another operational mode , a boot order may be specified for { HEAD ~ two or more mass storage devices } within { TAIL ~ a computer system } by determining for each mass storage device type whether more than one mass storage device exists within the computer system
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH