2nd Hd Macg4, Pt 6.1.2 2nd Internal HD Options

[trout]

I'm currently running a 1ghz G4 60 gig HD 512ram mac os10.2.6,,,with a barracuda 80 gig ata/100 internal slave HD...my problem...when running sessions 10 to18 tracks...no plug ins from 2nd HD I get a DAE error (-9073) "can't get audio fast enough from disk...disk too slow or fragmented etc..."Now running same session from master Hd (ststem Hd) I have no problems...Is this normal or is there something I'm not doing right...I think all preferences are correct...I'm a fresh puppy with PT and more times than I'd like to admit I don'y pay attention to all the instructions...thanks... trout