To check and manage my opticals discs dumps, I use the well known ClrMamePro software tool and ReDump’s dats files (available here : ). So I use it for several romsets like Saturn, 3DO, PCFX, NeoGeo CD, PC Engine CD, Mega CD,… Because CHD files are compliant with most emulators having an optical drive. Data tracks are LZMA compressed and audio tracks are FLAC compressed. CHD file format is a lossless compressed dump format to store optical disc.
