Most console games (PS1, Saturn, Dreamcast) use multiple tracks (data + audio). Converting them to a single ISO is not possible. Instead, we use chdman to extract them to a format. Step-by-Step Conversion
There are several reasons to convert CHD to ISO, even though CHD is the superior archival format. convert chd to iso repack
This is the official command-line utility used to manage CHD files. It is bundled with standard MAME releases or available as a standalone download. Most console games (PS1, Saturn, Dreamcast) use multiple