Booting in LPAR mode from SCSI

Red Hat Enterprise Linux 9.2 LPAR mode

Use the SE or HMC to boot Linux in LPAR from a SCSI boot device.

Before you begin

You need a boot device that is prepared with zipl.

For information about boot devices, see Table 1.

Procedure

Perform these steps to boot from a SCSI boot device:

  1. In the navigation pane of the HMC, expand Systems Management and select the hardware system that you want to work with. A table of LPARs is displayed on the Partitions tab in the content area.
  2. Select the LPAR where you want to boot Linux.
  3. In the Tasks area, expand Recovery and click Load (see Figure 1).
    Figure 1. Load task on the HMC
    Screen capture of the Hardware Management Console. In the Tasks area, expand the Recovery list and click Load.
  4. Select load type SCSI load (see Figure 2).
    Figure 2. Load panel with SCSI feature enabled - for booting from a SCSI device
    Screen capture of the Load panel. Ensure that load type SCSI is selected.
    Select the Clear the main memory on this partition before loading it check box only if you must clear memory. Memory clearing can considerably prolong the IPL procedure.
  5. Optional: For boot images in the secure-boot format, select the Enable Secure Boot option. For more information about secure boot, see Secure boot.
  6. Enter the device number of the FCP channel through which the SCSI device is accessed in the Load address field.
  7. Enter the WWPN of the SCSI device in the World wide port name field.
  8. Enter the LUN of the SCSI device in the Logical unit number field.
  9. If the boot configuration is part of a zipl created menu configuration, enter the configuration number that identifies your SCSI boot configuration within the menu in the Boot program selector field.
    Configuration number 0 specifies the default configuration.
  10. Optional: Type kernel parameters in the Operating system specific load parameters field.
    These parameters are concatenated to the end of the existing kernel parameters that are used by your boot configuration when booting Linux. The combined parameter string must not exceed 4096 characters.

    Use ASCII characters only. If you enter characters other than ASCII characters, the boot process ignores the data in the Operating system specific load parameters field.

  11. Accept the defaults for the remaining fields.
  12. Click OK to start the boot process.

Results

Check the output on the preferred console to monitor the boot progress.

For information about IPL progress messages that are issued before the Linux kernel gets control, see Small Computer Systems Interface (SCSI) IPL Machine Loader Messages, SC28-7006.