Is compressing safe for archiving?

[AnyOldName3]

It scrubs Wii disks, as the whole thing is encrypted, so the non-data sections look like data to compressors, so must be removed to make any difference. There is a small risk, though, so don't go losing the originals and bricking your Wii, as you may need to replace them later on. it can compress GameCube images losslessly.