> I install centos 5 on a HD while it is in a Compaq with 256Mb > memory. After install, i am in graphics mode (Gnome) and top > reports not quite all 256Mb used. > > Then I move the HD to a decTOP with 512Mb memory. I am running non- > graphics (init 3). I ssh into the unit and top reports not quite > all of that used..... > > So what ate up more than 256Mb memory (X is not running)? > > Perhaps there is something I did not clean up properly wrt the move. Have you done any I/O on the system? The memory could be in use by buffers. Please post the contents of /proc/meminfo. Your real free memory should be the sum of MemFree + Buffers + Cached. Alfred