I have successfully loaded some games into the SD card with Mad Sheep SDcard maker for Dreamcast. All the .gdi and cdi. were just drag and drop into the GDMenu list and they loaded right into the SD. However I recently came across a nice lot of DC Roms, But unlike before where the .gdi file had all the data. I get a zipped folder with a .gdi file with less then 1kb of data, and .raw and .bin and Tracks or whatever? I know it can all be compressed together to make a .chd, if your using an emulator, but how do I compress all the data into a .gdi file to play on original hardware with GDMenu? The .Bin files have more data in them than anything. on my PS1 psio it just reads the .Bins! simple..