Thanks to everyone who offered advice.
This morning I removed an IBM 80 pin drive from a different external enclosure, replaced it with the Fujitsu, and connected via 68 pin cable to the Adaptec 2940W in the 9500. So the adapter sequence was 80 ->50 -> 68 pin external. Result...nothing. None of the utilities would detect the drive on the Bus but a CD drive downstream showed up fine, so obviously the cables were connected ok.
This evening I tried the exact same thing with an 80 - 50 pin adapter previously tried and the Fujitsu showed up in HDST!! Formated for PC but HDST reformatted it as HFS+ with no hesitation. At this point all appears well, but clearly there are gremlins loose.
Through this entire process I made very sure there were no id conflicts so that was not the problem, and every thing was properly terminated. Much head scratching of my already thinning hair.
This morning I removed an IBM 80 pin drive from a different external enclosure, replaced it with the Fujitsu, and connected via 68 pin cable to the Adaptec 2940W in the 9500. So the adapter sequence was 80 ->50 -> 68 pin external. Result...nothing. None of the utilities would detect the drive on the Bus but a CD drive downstream showed up fine, so obviously the cables were connected ok.
This evening I tried the exact same thing with an 80 - 50 pin adapter previously tried and the Fujitsu showed up in HDST!! Formated for PC but HDST reformatted it as HFS+ with no hesitation. At this point all appears well, but clearly there are gremlins loose.
Through this entire process I made very sure there were no id conflicts so that was not the problem, and every thing was properly terminated. Much head scratching of my already thinning hair.