Save this as compress_dc.bat in your ROM folder:
chdman createcd -i "game.cue" -o "game.chd" dreamcast roms highly compressed
The Sega Dreamcast was ahead of its time. Online play, a built-in modem, and the visual leap of the Naomi arcade system made it a legend. But in 2026, preserving that library comes with a modern headache: Storage space. Save this as compress_dc