In recent versions of Windows 10/11 Pro, the classic “Manage” view from right‑clicking This PC / My Computer is still available, but Disk Management is usually opened in a different way.
To open Disk Management (where drive letters, names, and capacities are managed):
- Right‑click the Start button (bottom‑left of the screen).
- Select Disk Management.
- Alternatively, press Windows + R, type
diskmgmt.msc, and select OK.
Once Disk Management is open, drives and partitions with their capacities are shown. To change a drive letter or assign one:
- In Disk Management, find the volume you want to change.
- Right‑click the volume and select Change Drive Letter and Paths.
- Select Change (or Add if it has no letter), choose the letter, and select OK.
- Confirm with Yes.
If the option is missing or greyed out, the volume may be an EFI or Recovery partition, uninitialized, or you may not have sufficient permissions.
To rename a drive (set the name shown in File Explorer):
- Open File Explorer.
- Select This PC.
- Right‑click the drive and choose Rename, then type the new name and press Enter.
Microsoft 365 for business does not change how Disk Management is opened; it is part of Windows itself.
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