Create a New Partition on a GPT Disk in Windows 10

Need a new partition on a GPT disk? First confirm the free space and disk number, then create the partition with DiskPart or use Qiling Disk Master for a clearer preview.

Before You Create the Partition

• Open Disk Management and confirm the disk uses GPT.
• Make sure the space is unallocated. Shrink a large volume first if needed.
• Do not use DiskPart on the wrong disk. Check disk size carefully.
• Back up important files if you need to shrink an existing volume.

DiskPart Method

1. Back up important files on the GPT disk. If you are not sure which disk is the target, open Disk Management first and check the disk number and capacity.
2. Open Command Prompt as administrator, type diskpart, and press Enter.
3. Type list disk. Find the GPT disk by size. A GPT disk normally has an asterisk under the GPT column.
4. Type select disk N, replacing N with the correct disk number. Then type detail disk to confirm the model and volume list.
5. If the disk has unallocated space, type create partition primary size=102400 to create a 100GB partition. Omit size=102400 if you want to use all remaining unallocated space.
6. Type format fs=ntfs quick label="Data". Use fs=exfat only when the partition must be shared with non-Windows devices.
7. Type assign letter=E, or choose another unused drive letter.
8. Type exit, open File Explorer, and confirm the new partition appears with the expected size.

Use Qiling Disk Master to Shrink and Create the GPT Partition

If the GPT disk has no unallocated space, create it first by shrinking an existing data partition. Qiling Disk Master shows the disk map before and after each operation, so you can confirm the layout before writing changes to the disk.

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Step 1. Select the Partition to Shrink

Open Qiling Disk Master and locate the GPT disk by disk number, capacity, and drive letters. Select a data partition with enough free space, such as D: or E:. Avoid shrinking EFI, MSR, Recovery, or other small system partitions.

Step 2. Shrink the Selected Partition

Right-click the selected partition and choose Resize/Move. Drag the left or right edge inward, or enter the amount of space you want to leave unallocated. Keep enough free space inside the original partition for normal Windows use.

Step 3. Preview and Click Proceed

Check the preview and confirm that only the selected data partition will be shrunk. If the layout is correct, click Proceed and wait until the shrinking operation is complete.

Step 4. Select the New Unallocated Space and Create a Partition

After the partition is shrunk, select the newly created unallocated space on the GPT disk. Right-click it and choose Create to start creating a new partition.

Step 5. Set Partition Size and Format

Choose the partition size, drive letter, volume label, and file system. NTFS is recommended for Windows 10 storage, while exFAT is better for a removable drive shared with other devices. Confirm the settings, click Proceed, and then check the new partition in File Explorer.

Conclusion

Handle the visible symptom first, then protect data before any delete, format, resize, or clone action. If the disk layout is confusing, use a visual tool and confirm the target before you click Proceed.

Related Articles

• Windows Partition Management Tutorials
• Windows Data Recovery Tutorials

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