Windows 11 · Windows 11

Create a Drive Partition in Windows 11

Source-checked About 15 minutes

Answer

Back up important files, open Disk Management, shrink the correct existing volume to create unallocated space, then create a New Simple Volume there. Confirm the disk number, size, and drive letter before formatting. Formatting the wrong volume can erase data.

Before you continue
  • Back up firstPartition changes affect the disk layout.
  • Identify the correct diskCheck capacity and existing volumes, not just a drive letter.
  • Use unallocated spaceDo not format an existing data volume by mistake.
Open Microsoft's partition guide
Guide steps7 steps
  1. Back up and identify the disk
  2. Open Disk Management
  3. Shrink the existing volume
  4. Check the unallocated space
  5. Create a New Simple Volume
  6. Choose letter and format
  7. Verify in File Explorer
  8. If it still does not work

Back up and identify the disk

Save important files elsewhere. Note the physical disk's capacity, model if available, and the volume you intend to shrink.

Open Disk Management

Right-click Start and choose Disk Management. Allow it to load every disk before selecting anything.

Shrink the existing volume

Right-click the correct volume, choose Shrink Volume, enter the amount for the new partition, and confirm. Windows shows the result as Unallocated.

Check the unallocated space

Verify it is on the intended disk and has the expected size. Stop if it appears beside the wrong volume or disk.

Create a New Simple Volume

Right-click only the unallocated area, choose New Simple Volume, and follow the wizard.

Follow Microsoft's Disk Management guide

Choose letter and format

Select an unused drive letter. For normal Windows storage, use NTFS and a descriptive volume label. A quick format is sufficient for a healthy new volume.

Verify in File Explorer

Open This PC, check the new drive's size and label, create a harmless test folder, then delete that folder.

If it does not work

  • Shrink Volume can be limited by unmovable files; do not use random partition tools before making a full backup.
  • If the disk contains another operating system, recovery partition, or BitLocker volume, stop and verify its layout before changing it.
  • If Disk Management reports errors or the drive disappears, protect the data and check the drive's health before retrying.
Sources and verification

Checked against official documentation on . Scope: Windows 11.

The written instructions were checked against the current official pages linked below. The older video is kept for reference and may show different menus.

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