Help, halt and reboot bring single user mode?

[Danielle Heinzer]

I have the following problem:

Either a "halt" following by a "b", or a "reboot", brings my diskless Sun
3/50 (SunOS 3.2) in single user mode without displaying the message
"Single user boot -- fsck not done".

Either a "fasthalt" following by a "b", or a "fastboot", brings it in
normal multi-user mode.

Here is the log :

     <WSID>halt
     >b
     Boot: le(0,0,0) vmunix
     Size:
     Sun UNIX 4.2 Release 3.2EXPORT ...
     Copyright (c) 1986 by Sun Microsystems, Inc.
     mem = 4096K (0x400000)
     avail mem = 3244032
     Ethernet address = 8:0:20:1:d1:b5
     si0 at obio 140000 pri 2
     sd0 at si0 slave 0
     zs0 at obio 20000 pri 3
     zs1 at obio 0 pri 3
     le0 at obio 120000 pri 3
     bwtwo0 at obmem 100000 pri 4
     root on nd0
     using 44 buffers containing 360448 bytes of main memory
     /dev/nd0:
     #

Here is the rc.boot file:

     #
     # @(#)rc.boot 1.2 86/08/25 SMI
     #
     # Executed once at boot time
     #
     # Note that all "echo" commands are in parentheses.  This is done
     # because all commands that redirect the output to "/dev/console"
     # must be done in a child of the main shell, so that the main shell
     # does not open a terminal and get its process group set.  Since
     # "echo" is a builtin command, redirection for it will be done
     # in the main shell unless the command is run in a subshell.
     #
     hostname=MWS1
     #
     # It is important to fsck the root filesystem here to prevent
     # spurious panics after system crashes.
     #
     error=0
     if [ $1x = single userx ]
     then
           (echo "Singleuser boot -- fsck not done")  >/dev/console
     else
           if [ -r /fastboot ]
           then
                 (echo "Fast boot ... skipping disk checks") >/dev/console
           else
                 /etc/fsck -p >/dev/console 2>&1
                 case $? in
                 0)
                      ;;
                 4)
                      (echo "Root fixed - rebooting.") >/dev/console
                      /etc/reboot -q -n
                      ;;
                 8)
                      (echo "Reboot failed...help!")  >/dev/console
                      error=1
                      ;;
                12)
                      (echo "Reboot interrupted.")  >/dev/console
                      error=1
                      ;;
                 *)
                      (echo "Unknown error in reboot fsck.") >/dev/console
                      error=1
                      ;;
                 esac
          fi
     fi
     > /etc/mtab
     /etc/mount -f /
     /etc/mount /pub
     /bin/hostname $hostname
     /etc/ifconfig ec0 $hostname -trailers up
     /etc/ifconfig ie0 $hostname -trailers up
     /etc/ifconfig le0 $hostname -trailers up
     /etc/umount -at nfs
     sync
     #
     # exit with error status if there were any fsck errors above
     #
     exit $error

What is wrong ?

Regards,

Danielle Heinzer
ESA Computer Department/Computer Services
European Space Operations Centre
Robert-Bosch-str. 5
6100 Darmstadt
West-Germany
Tel int : 49-6151-886540