RHEL7 grub2-mkconfig breaks order of kernel menu entries

Solution Verified - Updated -

Issue

  • Running grub2-mkconfig breaks the expected boot order of kernels -- the latest kernel is no longer in position 0.

  • grub2-mkconfig command is not appending proper kernel menu entries in /boot/grub2/grub.cfg file. It is causing system to boot with older kernel.

  • Install latest (or multiple) kernel on RHEL7 and run grub2-mkconfig -o /boot/grub2/grub.cfg command. It is not sorting entries from latest kernel to older one. To Verify:

    grub2-mkconfig | grep ^menuentry
    

Environment

  • Red Hat Enterprise Linux 7
  • grub2 less than or equal to version grub2-2.02-0.16.el7

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