Provided that the first disk of a multi-disk program works correctly, you can swap disks on THEC64 Mini at the required moment. For a two-disk program, the current procedure is as follows:
When you are asked to change or flip disks in the program, press the MENU button on the Joystick and save your current position in one of the four slots available to BASIC
Exit to the Carousel and then remove the USB memory stick from THEC64 Mini
Insert the USB memory stick into a computer and rename THEC64-drive8.d64 to something else memorable – let’s say MYDISK1.d64
Copy the second disk image file to the USB stick and name it THEC64-drive8.d64
Pop the USB stick back into THEC64 Mini, ensuring you’re still on the Carousel screen
Launch BASIC from the Carousel
Press the MENU button on the Joystick and load the position you saved earlier from one of the slots on THEC64 Mini
Follow any on-screen instructions from your program regarding what to do next.
If at some point the program needs the first disk again, follow the above instructions from step 1, but this time rename THEC64-drive8.d64 on the memory stick to something else (e.g. MYDISK2.d64), then rename the other disk image file to THEC64-drive8.d64).