Installation on G3 B&W/450 was straight-forward. Occupies upper end of 20 Gb IDE drive. Installation to G3 Pismo/400 failed. Computer would not boot from CD. All I got was a black screen. I've never had this happen before. Mark --- Mark Jaffe markie at ydl.net (408) 972-9638 (408) 807-2093 (cell)