IPL an LPAR from a CCW device

Red Hat Enterprise Linux 9.2 z/VM guest

Use the VI VMSG z/VM CP command to choose a boot configuration from a menu configuration.

This example illustrates how menu2 in the sample configuration file in Figure 1 is displayed on the z/VM guest virtual machine console:

00: zIPL interactive boot menu
00:
00:  0. default (boot1)
00:
00:  1. boot1
00:  2. boot3
00:
00: Note: VM users please use '#cp vi vmsg <number> <kernel-parameters>'
00:
00: Please choose (default will boot in 30 seconds): #cp vi vmsg 2

You choose a configuration by specifying the configuration number. For example, to boot configuration boot3 specify

#cp vi vmsg 2

You can also specify additional kernel parameters by appending them to the configuration number. For example, you can specify:

#cp vi vmsg 2 maxcpus=1

These parameters are concatenated to the end of the existing kernel parameters that are used by your boot configuration when booting Linux®.