I've just added 4MB to a DECstation 2100. The self test shows 16MB (the real physical amount). When the system boots (its a diskless client under ultrix 4.2) I see;
real mem = 16777216
avail mem = 12529667
Does this mean the system is not utilizing 16MB? Can I confirm this?
The workstation is called csdws2. In /dlclient0/csdws2.root/sys/conf/mips we have a file called CSDWS2 and 'physmem' has been changed (by me) to 16 from 12. I gather that this is the correct file to tweak. Every other file in this dir is linked to /usr/sys/conf/mips, including the files BINARY and GENERIC but CSDWS2 is not linked. In /dlenv0/root0.mips/usr/sys/conf/mips I see unlinked BINARY and GENERIC (no diff from the linked files) so I've copied CSDWS2 there. It seems a bit odd to duplicate files...
but I'm reluctant to delete anything which was put up by the original installer (which I have now inherited).
As I'm relatively new to managing Unix/Ultrix, perhaps someone would offer comments and/or suggestions?
