IBM eserver pSeries 7311 D10 - Chapter 4. Checkpoints

Chapter 4. Checkpoints
Checkpoints display on the system operator panel and the virtual terminal while the
system unit is powering on and going through the initial program load (IPL). See the
system’s service guide for descriptive information and a complete listing of all
checkpoints used by the Model D10 and Model D20 I/O subsystems.
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