I have a 20th Anniversary Macintosh with a Comm Slot II Ethernet card and OS 9.1.
I recently replaced the old internal hard drive with a newer one so I initialized the new hard drive and installed the OS 9.1.
Since then, I'm unable to use the Ethernet on this Mac - when I use the AppleTalk control panel to select the Ethernet option, I get an error saying something about my connections. On the few cases that I manage to do this switch I'm unable to browse the internet or see any of my other Macs on the network. The only this that works in this case (if I managed to switch to Ethernet mode on AppleTalk) is a ping to the router on my network. A ping to any other Mac on the network or any website fails.
I had no problems with the Ethernet on this Mac before I did the hard drive upgrade.
What can be the problem? How do I fix it?