IBM VERSION 5 SY44-5902-05 - Manual (Page 18)

The following options are available in the full paging environment for all operating
systems:
v Perform an IPL
v Install the operating system
v Work with Licensed Internal Code
v Work with disk units
v Work with DST environment
v Start a service tool
v Work with remote service support
v Work with system partitions
v Work with system capacity
v Work with system security
Note: The following options are operating system-dependent. For a list of the
options available for your operating system, see “DST in OS/400 full paging
environment” on page 281.
v Select DST console mode
v Resume operating system display
v Perform automatic installation of the operating system
v Save Licensed Internal Code
For a description of each option, see “DST options” on page 10.
Attention: For systems with logical partitions, performing an IPL on the primary
partition causes the secondary partitions to be powered down. Failing to power
down these secondary partitions will cause an abnormal power-down on the
secondary partitions and possible loss of data.
Accessing Dedicated Service Tools
You can start dedicated service tools (DST) in several ways:
v Performing an IPL to DST (see “Performing an IPL to DST”).
v Pressing the System Request key while the system is operational (see “Pressing
the System Request Key while the system is operational” on page 7).
v Selecting function 21 while the system is operational (see “Selecting Function 21
while the system Is operational” on page 7).
This is available from the primary partition only.
v Performing an alternate IPL to DST (type D IPL) (see “Performing an alternate
IPL to DST (type D IPL)” on page 8).
After performing a type D IPL on a primary partition, the first step in DST must
be configuration recovery.
v Using the function key F16 (which is not displayed) while in DST debug mode
during a step-mode IPL.
Performing an IPL to DST
This procedure is for the entire system, or if logical partitions are installed, for the
primary partition. For secondary partitions, see “Performing an IPL to DST for
secondary partitions” on page 6.
Perform the following steps:
4 Service Functions V5R2