when shutting down your system to install options, shut down all applications first and then shut down the operating system. the system power turns off and the system goes into standby mode when the operating system is shut down. before removing power from the system, ensure that the shutdown process is complete. failure to do so can result in the loss of data. some option-installation procedures do not require the system to be stopped for installation. the option-installation procedures in this chapter will direct you here if stopping the system is required.

    1. log in to the system as root user.

    2. have your system administrator stop all applications that are running on the system.

    3. at the command line, ask the administrator to type one of the following commands:

    (1) if your system is running aix, type shutdown

    (2) if your system is running linux, type shutdown now -h

    4. after you shut down the operating system, set the power switches of any attached devices to off.