If your memory card is giving you "Corrupted Data" errors, try these physical and software steps: Clean the Contacts:

Fixing "corrupt" or missing save data for Resident Evil 4 (GameCube)

In Resident Evil 4, save data is crucial as it allows players to pick up where they left off in the game's intense campaign. The game's save system uses a combination of memory cards and in-game saves to store player progress. However, due to various reasons such as corrupted memory cards, power outages, or simply accidentally deleting the save data, players may lose their progress.