I have never used one of these CF cards but is the AmigaOS on the CF card and is there a device in the DEVS: drawer for the CF0: Just interested how the Amiga knows to boot from the PCMCIA slot thats all. Wouldn`t have thought the CF0: would have appeared from the early boot screen. Just intrigued.
On the assign issue assuming there is a valid OS running from a defined drive..
.... that is why you are assigning easynet to volume CF0: which I assume is the PCMCIA compact flash drive. In days of old the volume would often refer to a name of a floppy so if the program used the install from say the floppy volume 'EASYNET' and you wanted to install from a new location, you simply fool the Amiga by telling it that the EASYNET volume is somewhere else. In this case the EASYNET volume is being assigned to the CF0... So what you do is open the SHELL and then type the line given. This then makes the Amiga look to the CF0: drive for the Easynet folder. The CF0: would need to be a mounted drive though hence my first question on how and when the CF0: is mounted.
If you download and run SnoopDOS from Aminet you will see the various processes taking place and that always shows where the failures occur.