Wait for the instruction to "USE CONSOLE TO HALT PROCESSOR". When this appears, turn the console key switch on the far right from SECURE to LOCAL (12 o'clock position). Then press control/P to halt the processor. To reboot, spin up the RA81 by pressing LOAD and waiting for the white READY light to come on. Then press the white RESET button and turn the key switch back to LOCAL. Wait for message "SYSTEM job terminated" before you log on. To switch off, first spin down all drives: Magtape: Press REW/UNLD (twice if necessary) until the tape is all wound onto the bottom spool. Remove the spool, replace the collar seal, and return the reel to the rack. Floppy's: Just remove disk. RL's: Depress the LOAD button and wait for the yellow light to come ON. Then remove the disk packs and store them in the cupboard. RA81: Depress the RUN/STOP button, and wait for the yellow light to go OFF. Then switch off with 11/750 key switch and at the wall.