| Use Case | Verdict | |----------|---------| | Retro handheld (RG35XX, Retroid, etc.) | ✅ Essential | | Phone emulation (DuckStation, AetherSX2, MAME4droid) | ✅ Very useful | | Archiving disc-based games | ✅ Perfect | | Casual user wanting a one-click tool | ⚠️ Works but no hand-holding | | Mac/Windows user | ❌ Use chdman via terminal instead |

Cause: Corrupt source image or a multi-track CD (e.g., Gran Turismo 2 with two discs). Fix: Try converting to ISO first using "AnyToISO" (Android app), then convert that ISO to CHD.

Before diving into the "how," let's look at the "why." If you are storing disc-based games (PS1, Sega Saturn, Dreamcast, PSP) on your Android device, you are likely using one of three formats: