I installed netbsd in my little 500/200.  But, when it reboots after the
installation claims to be complete, it seems to be having a problem:

>>boot
>> NetBSD/pmax Secondary Boot, Revision 1.0
>> (root@mona, Fri May  7 14:50:29 EST 1999)
Boot: 5/rz0/netbsd
1456824read text: Input/output error

KN02-AA V5.3t    (PC: 0x0, SP: 0x8070fe18)
>>

I tried two different hard drives and am having the same result:  netbsd
installs happily but when I reboot it barks.  What should I look at?  I
really do not like the Input/output error message; I hope it does not mean
the machine itself is acting up.