Sorry for my ignorance but does the Wii .wbfs format save files without the
partition 0 - Update
partition 2 - installer
only partition 1 - Data is needed???
if not is their anyway to store and run games without the wasted space of partition 0 & 2?
There's no "installer" partition.
Partition 0 - Update
Partition 1 - Game
Partition x - Other (only Smash Bros use this one. Or maybe games with installable channels, like wiifit or mario kart)
By default, USBLoaderGX is dumping a disc to wbfs by removing the update partition. it keeps both the games and the "other" (needed for Smash bros).
You can tell the loader to keep ONLY the game partition (but if you dump smash bros, you will have issues with that game). using the setting "only game partition" is fine for ALL other games, as it has the same effect than "remove update partition". though, you might not be able to install the official game channel on system menu anymore if you remove the "other partition". not that it's very useful anyway....
so, the default mode used by the loader is the best choice and already remove wasted spaces. installable channels are only few Kb.
You can change this settings in the Settings > HDD settings.
If you use WiiBackupManager to put game ISO on your HDD, then there's a similar option where you can choose to "remove update".
WBM list partition on an ISO as "UGO" (update, game, other), if you mount your hdd with all your wbfs files, check the column where you have these letters, you should only have G or GO. if you see "U" then you have full game's data with update wasted space.