How to open an Emulator in GDI format, add rom and close. Help

[Ro Magnus Larsson]

(25.08.2020 05:41)megavolt85 писал(а):  *.gdi file not correct
THIS_IS_A_SAMPLE_DISK_FOR_USE.gdi create GDI Builder?

I do not understand the question. If you ask that if the file "THIS_IS_A_SAMPLE_DISK_FOR_USE.gdi" is optimized, answer no.
The second MEGA uploading is suppossed to be ready created with GDI builder as you suggested in another post. The first MEGA uploading is the original Mega Drive Official Emulator files with the added roms still to be created