I finally got a GDEMU but the Mad Sheep Tool isn't working. - Dreamcast-Talk.com
Zopsc GDEMU Optical Drive Simulation Board Card Optical Drive Board V5.15 Replacement Part for SEGA DC Dreamcast Host Game, ONLY Suitable for DC Va1 Computer, Easy to Install : Video Games - Amazon.com
Cannot create index menu using SD Card Maker for GDEMU : r/dreamcast
Tutorial: How to add the NEW and modern Openmenu to GDEMU on Sega Dreamcast - YouTube