Windows willÂ automatically mount new basic volumesÂ that are added to the system, and assign them drive letters by default.
AÂ drive letterÂ is a single alphabetic character A through Z that has been assigned by Windows to a physical drive or drive partition connected to the computer to reference the drive by.
You can remove the drive letter assigned to a drive, partition, or volume if wanted to unassign the drive letter from the drive, partition, or volume.
If you remove the drive letter from a drive, partition, or volume, the drive, partition, or volume will no longer show as a drive in File Explorer > This PC.
Unassigned driver letters will be available to assign to a drive, partition, or volume.
This tutorial will show you how to remove a drive letter in Windows 10 and Windows 11.