Flashes (Alerts)
Abstract
In order to support secure boot, a signed grub2 bootloader must be installed in the PReP partition of your LPAR.
Content
Linux Releases Affected
RHEL 8.5, RHEL 8.6, and RHEL 9.0.
IBM Systems Affected
IBM Power10.
Symptoms
You need to copy the signed grub into the PReP partition of your LPAR manually to support secure boot. Workaround In order to support secure boot, you must install a signed grub2 bootloader in the PReP partition of your LPAR by using the following steps: 1. Identify the PReP partition. It is usually the first partition of your boot disk, often /dev/sda1. 2. Run the following commands:
grub2-install <PReP partition>
dd if=/usr/lib/grub/powerpc-ieee1275/core.elf of=<PReP partition>
Your LPAR should now be ready for secure boot to be enabled in the HMC. Fix Outlook None I/O device impacted None.
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Document Information
Modified date:
12 May 2022
UID
ibm16584069