Can i move my digital game into someone else's hard drive?

You can't transfer ownership of digital content. So even if you save a game on someone else's hard drive, they would still need to buy the game so they would have a license to play it.

So Its on my hard drive, it tells me to buy it at the market place, its not on my download history, (i went to Xbox.com purchase history and it has things from 2008 but not my dlc!) and it seems like it thinks its someone else's that i moved to my hard drive.

Thank you, One more thing, Can I move a game from my attached hard drive to my console? I have fortnite installed on my attached hard drive so when I plug it in the xbox series x will I be able to move the game to my console internal hard drive and have the next gen benefit?

there is a way. I have bought the digital copy and preordered the game. I am allowed to download the game before release. I can now copy and move the game to my external hard drive. then I can bring the hard drive over to my friends house he can copy and
paste on his xbox. now he has the game allready preinstalled when you put your game in it will play instead of resinstalling since the preinstall will ask for a disk if you tried to play it with out disk

With my Seagate 4TB, Can I moved to games to my External Hard Drive?