grubby fails to update the value of repeated entries in Red Hat Enterprise Linux 8

Solution Verified - Updated -


  • Grubby repeats the entries of a single parameter instead of updating its value and keeping single origin.

  • Duplicate entries present in the kernel command line. For e.g crashkernel parameter is repeated twice if updated using grubby:

    BOOT_IMAGE=(hd0,gpt2)/vmlinuz-4.18.0-53.el8.x86_64 root=/dev/mapper/rhel-root ro crashkernel=auto resume=/dev/mapper/rhel-swap rhgb quiet crashkernel=160M


  • Red Hat Enterprise Linux 8
  • Package earlier than grubby-8.40-32.el8.x86_64

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content