exiting yaboot prompt to OpenFirmware (PPC)

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Environment

SUSE Linux Enterprise Server 10
SUSE Linux Enterprise Server 11

Situation

If one is at the yaboot prompt, but the configuration does not work and one would like to exit to the OpenFirmware there seems to be no way of exiting the yaboot but using the HMC Console.

Resolution

At the yaboot prompt issue

halt

and after exiting the yaboot

reset-all

to come to the OpenFirmware prompt.

Disclaimer

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