Summary: Problems installing SunOS 4.1.1 from tape.

From: Antonio Rene Hernandez Cordero (
Date: Fri Jun 13 1997 - 17:22:40 CDT

Problem: When I tried to reinstall SunOS 4.1.1 from tape on a SparcStation
1+, I get the following message "panic hat_pmgreserve: invalid pmg".

        I would like to thank Russ Poffenberger for telling me what is the cause
of this problem, and how to solve it. Recently we added 32 Mb in RAM using
4 Mb SIMMs to our machine to totalize 40 Mb of RAM, with 8 SIMMs of 1 Mb
each. The problem arises because the 4 Mb SIMMs were not in the first
bank. The solution was simple: to change the 4 Mb SIMMs to the first

Antonio Rene Hernandez Cordero
Centro de Estudios en Informatica y Estadistica
Universidad del Valle de Guatemala

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