CDmage Tutorial: Modding and Editing Retro Game Files Easily

CDmage Tutorial: Modding and Editing Retro Game Files Easily

CDmage is a powerful, lightweight utility essential for retro game modding. It allows you to open, view, extract, and replace files within disc images without corrupting the disc structure. This is critical for systems like the PlayStation 1, Sega Saturn, and Sega CD, which rely on precise sector formatting. Why Use CDmage?

Modifying retro disc images is not as simple as opening a zip folder. Disc formats use complex sector data to track files, audio tracks, and copy protection. Traditional archive managers will corrupt these sectors.

CDmage preserves this data structure. It allows you to swap out textures, text, or music tracks while keeping the disc bootable on real hardware or emulators. Supported Formats

CDmage works with a wide variety of retro disc image formats: .CUE / .BIN (Standard sector images) .ISO (Standard data images) .MDS / .MDF (Media Descriptor files) .CCD / .IMG (CloneCD images) Step-by-Step Guide to Editing Files

Follow these steps to safely extract and replace files inside a retro game image. 1. Open the Disc Image Launch CDmage. Click File > Open.

Change the file type dropdown to match your image format (e.g., Cue sheets (*.cue)). Select your file and click Open.

If prompted with a “Session” selection box, select Session 1, Track 1 (the main data track) and click OK. 2. Locate and Extract the Target File

Use the left-hand folder tree to navigate the game’s directory structure.

Click on a folder to view its contents in the right-hand pane.

Locate the file you want to mod (e.g., a texture file or a script file).