How to shrink or expand partition Size Windows 10

To manage partition size Windows 10, you can use in built Disk Management Utility.  This Utility can expand or shrink partition size in windows.

Manage partition Size Windows 10

1. Right click on This PC and Click on Manage. Computer Management Utility will come up.
2. Select Disk Management.
3. Now Right Click on Partition you want to manage.
4. Click on Shrink Volume in case you want to reduce Partition size. Now provide amount of reduction you want in size in MB in space.
5. Click on Shrink.
   
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Similarly in case you want to expand your partition size

1. Open Disk Management.
2. Now Right Click on Partition you want to manage.
3. Click on Extend Volume. Extend Volume wizard will come up. Click on Next.
4. Select from space available and click on next.
5. Click on Finish. Your space will be expanded.