You can hot swap the memory cards after a read is complete or have another SD Gecko card in the other GC memory slot.
This OP will deal with the Game Cube, I'll follow up with the PS2 in the second post.1.
Copy DOL Game files from the PC to a 2gb SD Card.2.
The older AR labeled disc has the advantage of Code Entry and running PAL games correctly converted on a NTSC Gamecube.
The Wii can easily transfer game saves between internal memory and a SD Card for non locked saves.
Fill your SD card up with whatever Homebrews and EMUs of your choosing from the PC.
Your discretion of what DOL files to install on the SD card.
We'll go with the newer Action Replay and SD Media Launcher first.
Format the SD card with a FAT16 filesystem (FAT12 and FAT32 are not supported).
Preparing a SD card from Windows, you'll have to Google the two files and download. Format the SD card with a FAT16 filesystem (FAT12 and FAT32 are not supported).
This procedure assumes that F: is the drive letter associated with your computer SD card reader. Run Be sure to have a Gamecube Memory card plugged in with the AR file.
A more convenient way to play your games, Homebrews and EMUs using other forms of Media.