How do I use subscription-manager to manually remove an old system and register and subscribe a new system?

Solution In Progress - Updated -

Issue

We have two licenses for RHEL 6. I have used them both on machines A and B. I have now cloned machine A to a new machine, C. I would like to get rid of B and register C as a new system. How can I do this?

Environment

  • Red Hat Enterprise Linux 5 and newer
  • Red Hat Enterprise Linux 6 and newer
  • Red Hat Enterprise Linux 7 and newer

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