Error Code 220: The feature on the NTFS cannot be supported by the program yet. This article will show you how to fix Error Code 220 in AOMEI Partition Assistant.
Managing hard drive partitions is usually a smooth process with AOMEI Partition Assistant. Whether you are extending a system drive or splitting a data partition, the software typically handles the complex mathematics of disk sectors in the background. However, sometimes the operation comes to a sudden halt before it even begins.
One of the more cryptic error messages users encounter is Error Code 220.
The full message usually reads: The feature on the file system is not supported. Unlike a "Low Disk Space" warning, this error sounds highly technical and alarming. What feature is unsupported? Is the hard drive broken? Is the operating system incompatible?
The good news is that Error Code 220 is rarely a sign of hardware failure. It is simply a notification that the specific partition you are trying to modify contains file system attributes—such as specific NTFS metadata, compression, or logical errors—that the current operation mode cannot process automatically.
In this guide, we will break down exactly why this error happens and provide three authoritative methods to bypass it and complete your partition resizing successfully.
To understand Error 220, you need to understand how AOMEI Partition Assistant interacts with your drive.
When you ask the software to resize a partition, it first scans the File System (usually NTFS on Windows). It needs to map out where every file is located so it doesn't accidentally chop a file in half during the resize.
Error 220 occurs when:
File System Errors: The partition table or file records have slight logical corruptions (very common and usually harmless in daily use, but critical for partitioning).
Complex Attributes: The partition utilizes advanced NTFS features like heavy compression or specific Reparse Points that the software's "Fast Mode" cannot handle.
Wizard Conflicts: You are using a simplified wizard (like "Allocate Free Space"), which is less flexible than the main interface.
Crucially, your data is safe. This error stops the operation before any physical changes are made to the disk.
In 80% of cases, Error 220 is triggered by minor "dirty bits" or logical errors in the file system. Even if your computer runs fine, these microscopic errors prevent partition software from calculating the new partition size safely.
You need to run the Windows Check Disk utility to repair them.
Step-by-Step Guide:
Open Command Prompt: Press Windows Key + R, type cmd, and press Ctrl + Shift + Enter to run as Administrator.
Type the Command: Enter the following command (replace C: with the drive letter you are trying to modify):
chkdsk C: /f /x
Understand the Flags:
/f: Tells Windows to fix any errors it finds.
/x: Forces the volume to dismount so no other programs can use it during the scan.
Reboot if Needed: If you are checking the C: drive (System Drive), Windows will ask to schedule the scan for the next restart. Type Y and reboot your computer.
Retry AOMEI: Once the scan finishes and Windows loads, open AOMEI Partition Assistant and retry the operation.
AOMEI Partition Assistant offers "Wizards" to make life easier, such as the "Allocate Free Space" wizard or the "Extend Partition Wizard."
However, these wizards use a simplified engine that is more sensitive to Error 220. If you encounter this error while using a wizard, the solution is often to perform the task manually using the main feature.
How to do it manually:
Example: You want to move space from D: to C:.
Don't use "Allocate Free Space."
Step A: Right-click the donor drive (D:) and select "Resize/Move Partition". Drag the left handle rightward to create unallocated space in front of the drive. Click OK.
Step B: Now, right-click the target drive (C:) and select "Resize/Move Partition". Drag the right handle into the empty space you just created.
Step C: Click Apply on the toolbar.
By breaking the task into two manual steps, you bypass the "Unsupported Feature" check that limits the automated wizards.
You might feel frustrated by the error, but Error 220 demonstrates that AOMEI Partition Assistant prioritizes data safety. Other, less sophisticated tools might ignore these file system irregularities and attempt to force the resize, which could lead to catastrophic data loss or an unbootable system.
AOMEI detects the potential risk (the unsupported feature or error) and stops you before damage occurs. Once you resolve the underlying file system issue using the methods above, AOMEI remains the most powerful tool to:
Migrate OS: Move Windows to new SSDs.
Convert MBR/GPT: Essential for Windows 11 upgrades.
Clone Disks: Create perfect backups.
Error Code 220: "The feature on the file system is not supported" is a safety stop, not a software failure. It typically points to logical file system errors or specific attributes like encryption that block automated wizards.
If there is still any problem, please feel free to contact us.