Okay, found my way here when searching for a way to recover a machines missing serial number. The post that brought me, is pretty dated so... does anyone have means to recover serial numbers profiler is calling "not applicable"? The machines I'm dealing with run the list of who's who in Apple models; from iMac's to Towers, in both the G3 and G4 families- running OS9.x. The whole problem started with my netOctopus Admin not seeing all the agents on the network. For an instant, a device would list, but would quickly be replaced by another machine on the network. My best guess is that netOctopus is getting confused by like machine models with "not applicable" serials. But if anyone should have other ideas on this particular matter, please chime in. Regardless, I'd love to know how to recover those serials, outside of opening every machine and searching them out. Thanks in advance.