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Run the command format override fs=NTFS label= to set the file system and volume label.Run the command create partition primary to create a partition of the full size of the drive.Run the command clean all to remove the partitions and data from the drive.Run the command select disk  to select the desired drive.​​​​​​ Use the index number associated to the drive, for example select disk 2.Run the command list disk to see all storage devices currently connected and recognized in the system.Open the Command Prompt as Administrator.Depending on the system, the process may take from minutes to several hours to complete.Back up your data before following these steps. This process will delete all data and partitions in the drive.To clean the drive and create a new primary partition, follow the steps below: Note The Microsoft knowledgebase have some decent articles.Diskpart is a Windows* CLI utility that can be used to manage the storage devices. I would strongly advise you do a little research of UEFI MBR GPT partitions.

They can be the same partition (and usually are esp in some older operating systems)- but do not have to be- and you need a reasonable level of competence to figure what you're doing.

Honestly- if you are not happy to play around with partitions, system files- and if you screw up- system prompt instructions for modifying structures (or using a Linux distro installation disk to boot- so you can modify the partition information back again)- just don't do it.Īlso- your 'c:' drive- or the drive on which you have your windows folder- contrary to what a lot of people will tell you- does not have to be active- your partition on which your MBR is- does. UEFI and other considerations have to be taken into account- thus- if you look at Windows 10 on a modern computer- it'll have a small (usually 100Mb) hidden partition marked as active- whereas the main 'c:' drive- contrary to what you expect- is not the active partition- and if you modify it to active status- when you reboot you'll get an error message 'Unable to load MBR'. Unless you are familiar with what you're doing- you would be well advised not to play around with the active status of various disk partitions.Į.g.