How to Merge Partitions in Windows 11

Merging two separate disk partitions in Windows 11 can be accomplished entirely through built-in system tools without downloading third-party software. To combine partitions natively, you must back up any essential files from the secondary partition, delete it to turn its space into unallocated storage, and then extend the primary partition into that newly freed space.

Important Prerequisites

• Data Backup: Native Windows tools cannot merge partitions while preserving data on both drives simultaneously. You must delete the adjacent partition, which erases all data on it. Back up any important files from that volume to an external drive or cloud storage before starting.
• Partition Layout: The partition you plan to delete must be located immediately to the right of the partition you want to expand within the same physical disk.

Step-by-Step Guide: Merging Partitions Using Disk Management

1. Open Disk Management
   • Press Windows Key + X on your keyboard.
   • Select Disk Management from the Power User menu.
2. Back Up the Target Partition
   • Open File Explorer and copy all necessary files from the partition you intend to delete (e.g., D: drive) to another safe location.
3. Delete the Adjacent Partition
   • In Disk Management, locate the disk containing the two partitions.
   • Right-click the partition directly to the right of the partition you want to expand.
   • Select Delete Volume…
   • Click Yes when prompted to confirm that all data on the volume will be erased. The space will now be labeled as Unallocated.
4. Extend the Main Partition
   • Right-click the partition you want to expand (e.g., C: drive).
   • Click Extend Volume… to launch the Extend Volume Wizard.
   • Click Next.
   • By default, Windows selects all available unallocated space. Verify the disk selection and amount of space, then click Next.
   • Click Finish.

Your primary partition will now occupy the combined storage space of both original partitions.

Alternative Method: Merging Partitions Using Diskpart

For users who prefer using the Command Prompt:

1. Press Windows Key + S, type cmd, right-click Command Prompt, and select Run as administrator.
2. Type diskpart and press Enter.
3. Type list volume and press Enter to see all available partitions.
4. Select the volume you want to remove by typing select volume X (replace X with the number of the partition to delete) and press Enter.
5. Type delete volume and press Enter.
6. Select the volume you want to expand by typing select volume Y (replace Y with the number of the partition you are keeping) and press Enter.
7. Type extend and press Enter.
8. Type exit and press Enter to close Diskpart.