There should be proper partitions on the drive.
Can you partition an external hard drive for xbox one.
Also 500gb is not going to be enough for the xbox unless you plan on buying another drive in a year or so.
The usb storage should have a 3 0 connection type.
Then choose a partition style and confirm.
You ll need two drives.
Here highlight system and select the option labelled storage.
You need to initialize the hard drive first and then recreate.
In order to store games it should have a capacity of 256 gb or more.
In the pop up menu that appears select transfer.
This will bring you to the settings menu.
I d recommend getting a 2 3tb drive for the xbox so it will do you for a few years.
On the next screen you will see your xbox one s internal drive as well as your external drive.
But when an xbox one external hard drive is connected no partition is displayed.
Select the xbox one external hard drive which shows as disk unknown not initialized and choose initialize disk from the context menu.