IBM Power series servers doesn't set the latest kernel as default

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 5
  • IBM Power series servers (ppc64)

Issue

  • ppc64 systems boots with older kernels
  • After installing a new kernel it will update on the yaboot.conf but once the server is rebooted, it will boot with only old kernel. Once checking through the console only old kernel showing in the boot options.There is no option in the yaboot.conf to set a default kernel.

Resolution

The default is not set to the new kernel. The kernel in the first image is booted by default. To change the default kernel to boot either move its image stanza so that it is the first one listed or add the directive default and set it to the label of the image stanza that contains the new kernel.

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-kernel-boot-loader-pseries.html

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