How to change the drive letter assignment in Windows

Windows uses MountMgr to manage drive letters. MountMgr will assign the next available drive letter to each device added, regardless of type. With the system drive assigned the letter C:, there may be other IDE, SATA or USB devices, such as a DVDROM or a Flash drive assigned to letters D: and E:. When adding another drive, Windows 10 / 8 / 7 / Vista and XP will assign the next drive letter available, which in this case would be drive letter F:.

Drive letters can usually be manually changed using Disk Management, however there may be some exceptions. For full details please see the relevant Instructions or Microsoft Knowledge Base article below:


Operating System
Instructions
Windows 10 Click Here for Instructions
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Windows 8 Click Here for Instructions
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Windows 7 Click Here for Instructions
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Windows Vista Click Here for Instructions
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Windows XP Click Here for Instructions
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Please select an Operating System from the table above to display that system's instructions.



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