10.2 I am trying to upgrade my system from 5.5 to 6.0. I am getting an error message about a missing file right before the install of the SUBSYS tape:

FILEINFO.INSTALL.SYS

Any idea what I have forgotten?

You probably did not restore the AUTOINST files from the PowerPatch tape.

:RESTORE *T;A@.INSTALL,F@.INSTALL;DEV=1;SHOW

This will restore the FILEINFO file for you.