If you are running Windows ® 7 or later and are using a drive larger than 2TB, initialize the disk(s) with GPT. When prompted to, initialize your disk(s). Press the Windows key + R, type compmgmt.msc, and click Run to open Computer Management. If you cannot find an uninitialized drive in Disk Management, skip the following steps and try to partition your device. Note: You typically only need to initialize a drive if the drive is new.

The partition uses a file system (for example, ex-FAT, NTFS, and so on).

A partition defines an area of the drive to use for storing data.

Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive.