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If you have an NCR® Microchannel® system with an NCR 77C22 or 77C22E video chip integrated on the motherboard, select the IBM VGA 640x480 with 16 colors setting during installation.
After the installation completes, run the Video Configuration Manager (or scoadmin video at the command line) in character mode and then select NCR VGA. NCR VGA automatically detects which video chip is installed on the motherboard.
VGA MAP_CLASS failed ...You can safely ignore this error message, which denotes a recognition problem of the NCR chip set.
If you have one of these chip sets, you must always run the Video Configuration Manager in character mode after initial installation. Your NCR chip set might not be recognized properly in graphical mode.