You do not give us much detail, so I will assume that you are running windows 10. Start the "Disk Manager" application by pressing "Start", then typing in "diskman" to run the software. Then you can create and format the partition.
You do not give us much detail, so I will assume that you are running windows 10. Start the "Disk Manager" application by pressing "Start", then typing in "diskman" to run the software. Then you can create and format the partition.