How to disable kernel USB subsystem?

Solution Verified - Updated -

Issue

  • What kernel command line option to pass via the bootloader to disable kernel USB subsystem? [ANS]
  • How to enable USB if a nousb parameter is passed at boot time in Red Hat Enterprise Linux? [ANS]
  • The nousb kernel line option does not seem to work with RHEL 8 kernels, what should be used instead? [ANS]

Environment

  • Red Hat Enterprise Linux (RHEL)

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