Set the IPL options from function 02 on the control panel. To permanently
change the IPL speed use the CHGIPLA command.
Note: Systems managed by the Hardware Management Console (HMC) should
use the HMC to perform control panel functions.
For
information on performing control panel functions using the HMC, see Control
panel functions.
- Use function 01 to display the current IPL option, including IPL speed.
This is the option and speed that the system will use at the next IPL. Refer to Function 01: Display selected IPL type, system operating mode,
and IPL speed for more information about function 01.
- Refer to the information in Table 3 for
speed override definitions.
- Use the HDWDIAG (hardware diagnostics) parameter of the CHGIPLA command
to permanently change the IPL speed. The values are: The default shipped value *MIN (minimal)
for fast diagnostics and *ALL for all (full) diagnostics.
IPL speed recommendations
- Use CHGIPLA *MIN, or Function 02 F or V=F for
most IPLs (to perform a fast IPL that uses minimum diagnostics).
- Use CHGIPLA *ALL, or Function 02 S or V=S,
if you change hardware or suspect an intermittent hardware failure (to perform
a slow IPL that uses all diagnostics).
- Use CHGIPLA *ALL, or Function 02 S or V=S during
the first Install IPL. You can set this at the panel with Function 02; it
affects only the one IPL because the next IPL will again pick up the value
set with CHGIPLA.
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