Thanks to this reddit community, my 256gb sd card(filled completely) works perfectly on my gdemu. : r/dreamcast
SD Card Maker and GDEMU issue : r/dreamcast
Cannot create index menu using SD Card Maker for GDEMU : r/dreamcast
GDEMU Games List Generator | SegaXtreme
SEGA Dreamcast GDEMU installation and setup – RetroGamesUltra
Descargas: GDEMU SD - Dreamcast.es
Amazon.com: XBERSTAR GDEMU Optical Drive Simulation Board Card for SEGA Dreamcast DC Game Machine the Second Generation Built-in Free Disk : Video Games