Help Editing a CDI file.

I have a CDI file for my DC that im trying to edit.

The CDI file is the MAME4ALL image and its missing a ROM that i wanted, so im trying to edit the CDI file and add this extra ROM.

So far ive used UltraISO to add the file but once i do, it breaks the disk and doesnt boot anymore.

I just can't seem to find an CDI editor that will allow me to re-save the file as a CDI image.

Can someone tell me how i can edit the CDI file and add this extra ROM?

Thanks

Considering MAME4ALL isn't distributed with roms, and distributing the roms in such a manner is quite illegal, we can't help you with editing the CDI.

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