Is compressing safe for archiving?

[GiSWiG]

(04-13-2012, 03:16 AM)AnyOldName3 Wrote: 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.

It can or it does compress GameCube losslessly? Is there custom settings for the compression? I didn't see any in the GUI.

Thanks!