Additional Space taken up by xbox 360 game already installed.

No one with a similar issue?

What I'm getting at is that additional space isn't taken up by the same game twice. For example, my brother bought KI:CE, but later I bought KI:UE - my install was faster because most of the game was on the HDD already; it just added my license to use the
game as well as the additional in-game content e.g., alternate outfits & accesories for all of the characters). As I said, I imagine it works the same way with the OP's idea of using the disc. Merlin's response (supposedly) confirms that this does,, in fact,
work.

Reinstalling doesn't help.

What has One drive have to do with this?? The Drives I'm trying to install to have ample space though. But also, the games are already installed. They won't show in app anymore in addition to not being able to install any new stuff.

You cant mixer is part of the Home Experience. It takes up no more space than it did before mixer was added. This is installed to the reserved partition space all your OS is saved too. For instance if you have a 500GB console 120-140GB of that storage
device is already reserved and taken for OS and updates

I was hesitant at first about kinect too, but it really is a good feature to use! Used game policy was taken away ages ago you can trade in xbox one games as you could the 360 games now. You are right about the game installs though, takes forever..and takes
up way too much space on a harddrive that isn't very big to begin with.