> I am looking to reduce the disk space footprint for a portable windows 10 system. I > want all the .198 ROMS possible but want to weed out the CHD's that are non working. > I am not very good with the command line commands. Can someone help me put together a > command sequence that would give me this information? Thanks.
I wouldn't worry about a command sequence but you can use QMC2 as a resource of information.
QMC2 allows you to align the game listing based on parameters such as rom type or driver status. You can choose it to collapse clones or have it show everything in the listing.
From there you can manually look and decide what you're interested in and what you want to download.