Windows 11 25H2 users may need to resize C drive, adjust the EFI system partition, format USB drives, check disk errors, or prepare a new SSD. A clear partition manager helps you finish these tasks without using long command lines.
Step 1. Install and open Qiling Disk Master. Choose the partition tool you need, such as resize, format, check, or clone.
Step 2. Select the target partition. For resizing, drag the partition border or enter the new size. For formatting, check the drive letter and file system carefully.


Step 3. Preview the pending operation. Make sure the system partition, EFI partition, or external device you selected is the correct one.

Step 4. Click Proceed to start the operation and wait until it finishes.
Use it before a Windows feature update if the system or EFI partition is too small. It is also helpful when USB drives show write protection, SD cards cannot be formatted, or a new SSD needs to be prepared.
For a specific update error, see resize EFI system partition when Windows 11 update fails.
A Windows 11 25H2 partition manager is useful for storage cleanup, update preparation, and disk changes. Always confirm the target disk and back up important files before changing partitions.