memory pager and is replaced by PAGER.SYS. PAGER.SYS runs in the same address space than FreeVMS kernel. When memory subsystem is initialized, FreeVMS server starts a process named INIT.EXE. This new thread loads all initial modules, mounts SYS$ROOT device, initializes devices tree and logical names and runs scripts in SYS$ROOT:[SYSMGR].
SYS$INIT does not run in same address space than FreeVMS server. Unlike FreeVMS server, it does not use Sigma0 anymore. All default pages are caught by FreeVMS server.