Wii Disc (also true backups) ENCRYPTED FILE SYSTEM
Backup Loader disc - UNENCRYPTED FILE SYSTEM
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The Disc Channel CANNOT read the Unencrypted file system, so with a ModChip, you'd still need to use the backup loader channel...
If your really worried about HD Space, burn 2 copies... patched and unpatched...
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Even with a modchip, the Backup Loader will run at 3x, since it uses the internals to read the disc... there's only 2 ways to run Wii games at 6x speed... Buy it, or buy a mod chip!