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From: cspencer@bbnccv.UUCP (Cliff Spencer)
Newsgroups: net.unix-wizards
Subject: Re: Strange behavior at boot time from swapon...
Message-ID: <192@bbnccv.UUCP>
Date: Thu, 11-Jul-85 08:12:13 EDT
Article-I.D.: bbnccv.192
Posted: Thu Jul 11 08:12:13 1985
Date-Received: Sat, 13-Jul-85 08:48:27 EDT
References: <1036@trwatf.UUCP> <795@umcp-cs.UUCP>
Organization: Bolt Beranek and Newman, Cambridge, MA
Lines: 11

> Adding /dev/rra0b as swap device
> No such device: \c
>> Um, er, are you SURE you want to add rra0b as a swap device? :-)
>> (Swapon wants a block device.)

I think that a "no such device" is more probably caused by 
a missing swap specification in the kernel config file.
You might want to add
config vmunix blah blah blah swap on blah and ra0
					  ^^^^^^^
					-cliff