IBM SY44-5902-05 manual Installing Licensed Internal Code, Installing the operating system

Table 1. DST options (continued)

	Paging environment
DST options	D-IPL (non-paging)	Limited	Full
Work with disk units	Yes	Yes	Yes
Work with DST environment	Yes	Yes	Yes
Work with Licensed Internal Code	No	Yes	Yes
Work with remote service support	Yes	Yes	Yes
Work with save storage and restore storage	No	Yes¹	No
Work with system partitions	No	Yes¹	Yes¹
Work with system capacity	No	Yes	Yes
Work with system security	No	Yes	Yes

Note: ¹ Indicates that this option is operating system-dependent. It is available only under certain operating systems (see Appendix A, “OS/400 Operating System” on page 281).

Installing Licensed Internal Code

This option allows you to install or restore Licensed Internal Code. For more information on how to use this option, see “Utilities to Install and Restore Licensed Internal Code” on page 225.

Attention: Doing this to a system with multiple partitions can cause damage to the partition configuration and loss of data.

This option is available only in the stand-alone environment.

Installing the operating system

Select the Install the operating system option from the Use Dedicated Service (DST) Tools display.

This option installs the operating system from removable media (for example, tape). The present operating system (if any) is replaced. Use this option to install a new release of the presently installed operating system or to install the operating system after a failure. You must run this option from the primary console.

This option is not available under basic DST authority. For more information about authority, see “Work with service tools user IDs” on page 25.

Perform an IPL

Select the Perform an IPL option from the Use Dedicated Service Tools (DST) display.

This option allows you to load and start the operating system from the disk. If you have installed the Licensed Internal Code and there is no operating system installed, load and start the operating system from the same removable media device as the Licensed Internal Code.

Work with Licensed Internal Code

This option applies PTFs, removes PTFs, or makes PTFs permanent to the system Licensed Internal Code from removable media when the operating system is not available. It also allows you to rebuild the Licensed Internal Code, display the

Chapter 1. Dedicated Service Tools (DST) 11