Starting this morning, it will not let either of my Xbox Ones boot up. I can connect it to my laptop and see it in my devices, the WD Drive Utility, and run the WD Utility scans on it (which all pass). It says the drivers/software are all up to date. I cannot access the HD itself though and see the content (but that may be because it’s formatted for my Xbox one?)
If the unit was formatted on the Xbox, you won’t be able to access the data on your computer.
If you boot your Xbox and then connect the drive, are you able to use the Xbox without issues?