Powering On and Off

Turning Off the System

Turning Off the System

This section provides step-by-step instructions for powering down your

Model 743.

CAUTION: If you have a local disk attached to the Model 743, do not turn off power to the system without first shutting down the operating system software according to the following procedure. Turning off the power for your system without first doing the shutdown procedure may result in damage to data on your disk. Always execute the shut-down process to completion first.

1Exit all processes currently running.

2Enter the following command at the shell prompt:

reboot -h

This gives a zero-length “grace period” before the system goes down to the halted state.

3After completing several shutdown procedures, the system eventually dis- plays one of the following messages:

HP-UX Message

Halted, you may now cycle power.

HP-RT Message

**** HP-RT OS is down ****

Halting (in tight loop) -- OK To Hit Reset Button

4At this time the system no longer responds to keyboard input and you may turn off the power. Turning the system back on initiates the boot sequence (see Appendix A of this book).

If you want to shutdown and reboot an HP-UX system automatically, instead of the above procedure, simply enter the shutdown command with no options.

See the HP-UX reboot man page for various other options.

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