if I understand correctly the original post, to process all the CHDs you need to copy them in a single directory (say G:\ClrMAMEpro\mame0132b\roms\CHD), launch the applications, enter CHD as directory (this is the most natural way of interpreting the OP... alternatively you may need to enter G:\ClrMAMEpro\mame0132b\roms\CHD, because the instructions are not so clear), wait for the update to finish
without moving all CHDs in a single directory, there is no way to use this utility to update your files
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