zip is not supported for Sega CD. You will need to have .cue/.bin in the same folder, or use .chd files if you prefer a single file (Genesis Plus GX only).
You can use chdman (it's part of MAME) to convert .cue/.bin to .chd, and then back to a single .cue/.bin.
To create .chd files:
chdman createcd -i "C:\GAME\mygame.cue" -o "C:\Destination\mygame.chd" -f
To convert .chd to a single .cue/.bin:
chdman extractcd -i "C:\GAME\mygame.chd" -o "C:\Destination\mygame.cue" -ob "C:\Destination\mygame.bin" -f
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Hi sorry I’m new to all this I’ve flashed my sega 2018 flashback hd with the sega cd firmware but how to I load the games the sd card icon is greyed out ?
Any help would be greatly appreciated