Sorry for delay in reply here...
The Skinny so far,
A3000 with 2.04 Rom chips on motherboard and workbench 2.04 loaded on quantum 40mgb prodrive HD. Computer works fine when just the original HD. I purchased a PC scsi card and "dual HD scsi cable" ($7.00) and am trying to set up a 2.1gb Quantum Atlas xp32150 as second HD with said cable (replaced original a3000 single HDscsi cable. The goal is to format the 2.1gb and install fresh amiga operating system on it. The problem I believe I have is that the 2.1 was in a Silicon Graphics machine (it may still have operating software on on it from the SGI)with scsi id 6 and no termination set on it. I put terminator jumper on it and change the id to "2" with another jumper, but Amiga 3000 will not get past a "white or grey" screen with this arrangement.
The thing I am not sure about is what to do about termination on original 40mg quantum prodrive...some documentation I ran accros says it has no terminator, but a resistor....

Any more help on this would be appreciated. Lastly, is it really worth going to Amiga OS 3.1, 3.5, 3.9 for this A3000/16 with 2meg chip and 4meg fast ram?
Thanks again! Keep Smilin'