AOMEI Partition Assistant Professional Overview

Advanced Partition Management

AOMEI Partition Assistant Professional helps you effortlessly handle complex disk & partition operations, especially when you’re unsatisfied with basic features of Windows built-in Disk Management or already have unresolved issues with it. For upgrading to a new hard drive, optimizing your system, or managing partitions, AOMEI Partition Assistant Professional gives you total control over your disks.

  • Allocate Free Space

    Seamlessly allocate unused disk space between partitions for extending or creating new partitions. Max usability ensured with either adjacent or nonadjacent unallocated space supported.

  • Quick Partition & Split Partition

    Create new partitions quickly without a full format, allowing immediate use, easy setup with minimal steps and faster partitioning process. Split a large partition into smaller ones, optimizing disk space management without data loss.

  • Dynamic Disk Management

    Simplifies managing dynamic disks, which offer advanced partitioning features compared with basic disks. Enjoy easy resizing, creating, and deleting of dynamic disks with minimal effort and maximum flexibility.

  • 4K Partition Alignment

    Optimize disk performance by aligning partitions to 4K sectors, improving read/write speeds and enhancing SSD lifespan, ensuring better efficiency for SSD drives and other modern storage devices.

Safe OS & Data Migration

Smooth, risk-free migration of your operating system and data to a new disk, preserving system settings, installed programs, and files without data loss, downtime, or complicated steps. Works best for upgrading hard drive to SSD, disk replacement, expanding storage and upgrading system for better performance.

  • Bootable OS Migration

    Only clone and move OS to a new drive for upgrading hard drive without re-installation.

  • Whole Disk Clone

    Create an exact copy of an entire disk, including the OS, applications, and files, for easy backup, system upgrade, or migration, ensuring a seamless, data-preserving transfer to a new disk.

  • Selective Partition Clone

    Clone specific partitions, rather than the entire disk to back up important data or transfer specific files and applications to a new drive, ensuring data integrity and migration efficiency.

Flexible Disk Converter

Converting disks is often necessary to optimize storage management, enhance system compatibility, and support specific hardware configurations.

  • Convert to MBR GPT Disk

    Convert disks from MBR to GPT effortlessly, supporting larger disk sizes, more partitions, and compatibility with modern UEFI-based systems for improved performance and flexibility.

  • Convert to Basic / Dynamic Disk

    Convert disks between basic and dynamic disks, supporting advanced storage configurations like spanned, striped, and mirrored volumes for greater flexibility in managing more advanced disk setups.

  • Convert to NTFS / FAT32 Partition

    Seamless conversion between NTFS and FAT32 file systems. Ensure compatibility with different devices and operating systems, optimizing disk performance and storage efficiency across file system formats.

  • Convert to Primary / Logical Partition

    Allows seamless conversion between primary and logical partitions safely. Maximize partition numbers and manage disk layout more flexibly, especially for creating multiple partitions on MBR disks.

Explore More Features

  • Partition Management
  • Smart Wizard
  • PC Optimization
Resize/Move Partition
Resize/Move Partition

Solution to "Extend Volume" greyed out or "Shrink Volume" not enough space. Easily adjust partition size without data loss.

Merge Partitions
Merge Partitions

Combine two partitions into a larger one, or add not adjacent unallocated space to any partition.

Create/Delete/Format Partition
Create/Delete/Format Partition

Easily create new partitions, delete unnecessary ones, and format them to the file system you need in a single, streamlined operation.

Check Partition
Check Partition

Not only feature to find errors on partition(s), but also service to fix it.

Hide / Unhide Partition
Hide / Unhide Partition

Easily hide or unhide a partition according to your needs.

Set Active Partition
Set Active Partition

Set a partition as active so the system can correctly locate and boot the operating system.

Virtual Disk
Virtual Disk

Easily create, attach, and detach virtual hard disks (VHD/VHDX), making it simpler to manage storage.

1-Click Adjust Space
1-Click Adjust Space

Automatically redistribute disk space between partitions with one click for fast and balanced storage optimization.

Change Label
Change Label

Changing the label of a disk or partition can be useful for organizing and managing data on the disk.

Extend Partition Wizard
Extend Partition Wizard

Extend partitions by reallocating free space from other partitions without data loss, helping resolve low disk space issues easily.

Change Partition Type ID
Change Partition Type ID

Changing the partition type ID can be useful when converting a partition from one file system to another or when repairing a damaged partition.

Dynamic Volume Management
Dynamic Volume Management

Extend, shrink, create, delete dynamic volumes, including simple, spanned, striped, mirrored, and RAID-5 volumes.

Shred Files or Folders
Shred Files or Folders

Destroy unwanted files and privacy data from your computer to avoid being recovered.

Wipe Disk and Partition
Wipe Disk and Partition

Permanently and safely erase all data on partition or hard drive to prevent data from being retrieved by any data recovery software.

Schedule Disk Defragmentation
Schedule Disk Defragmentation

Schedule your disk defrag tasks in daily, weekly, monthly or event triggers to automatically perform disk defragmentation.

Change Drive Letter
Change Drive Letter

Simply provides a way to assist you to modify the letters according to your preference.

Partition Recovery
Partition Recovery

Fast search helps you quickly recover deleted or lost partition. Full search will scan each sector of the selected disk for recovery.

Make WinPE Bootable Media
Make WinPE Bootable Media

Make a Windows PE bootable CD/DVD or USB to troubleshoot system problems and recover data when the native system fails to boot.

Windows To Go Creator
Windows To Go Creator

Create Windows 11/10/8/7 To Go bootable USB drive. Build a portable and functional Windows 11 system on USB flash drive to upgrade easily and safely.

UEFI BIOS Boot Manager
UEFI BIOS Boot Manager

Easily edit, create, delete, backup and restore EFI/UEFI boot entries, modify EFI/UEFI boot sequence, etc.

Rebuild MBR
Rebuild MBR

Rebuilding the MBR involves recreating the MBR code and restoring the partition information to allow the computer to boot from the disk again.

Integrate to Recovery Environment
Integrate to Recovery Environment

Integrate AOMEI Partition Assistant into Windows built-in recovery environment. Extend system partition without bootable media.

Reset Windows Password
Reset Windows Password

Easily reset or remove Windows passwords without reinstalling the Windows computer system.

Bitlocker Encryption
Bitlocker Encryption

Protect your data from unauthorized access by adding a password to encrypt partitions on Windows devices.

Initialize Disk
Initialize Disk

Initialize Disk is designed for preparing a new or unallocated disk for use by an operating system.

PC Cleaner
PC Cleaner

Precisely detect and remove junk files to free up disk space, including system and registry junk inaccessible for non-professional users.

Delete Large Files
Delete Large Files

Automatically detects and deletes unnecessary large files, freeing up storage space and optimizing system performance without manual effort.

App Mover
App Mover

Moves programs or large folders from one drive to another, especially helpful to free up C: drive to improve PC performance.

Duplicate Files Finder
Duplicate Files Finder

Automatically scan and remove duplicate files to free up disk space, with custom filters to locate dates and skip specific files.

Monitor Disk Temperature
Monitor Disk Temperature

Monitors disk temperature in real time to detect overheating risks and avoid performance loss or data damage.

SSD Secure Erase Wizard
SSD Secure Erase Wizard

Reset your SSD to its factory state for peak performance. Compatible with most modern SSD, such as Samsung, Intel, Kingston, etc.

Disk Space Analyzer
Disk Space Analyzer

Identify, locate, and remove space-hogging files to free up disk space efficiently and quickly

Disk Speed Test
Disk Speed Test

Test the read and write speed of the disk for determining the performance of a storage device and for identifying any potential issues.

Disk Surface Test
Disk Surface Test

Scan the entire disk to detect the bad sectors and repair the disk errors that could affect its performance or reliability.

4K Partition Alignment
4K Partition Alignment

Make partition align to improve the speed of reading and writing.

Disk Health
Disk Health

Monitor hard drive health in Windows to prevent any unforeseen crashes and the subsequent data loss they would cause.

Get the Best Plan to Fit Your Needs

AOMEI Partition Assistant

Professional

From $ 49 .95
Buy Now
Free Trial >>
  • One license for 2 PCs
  • Support Windows 11, 10, 8.1, 8, 7, 7 SP1
AOMEI Partition Assistant

Server

From $ 169 .00
Buy Now
Free Trial >>
  • One license for 2 servers
  • Support Windows 11, 10, 8.1, 8, 7, 7 SP1
  • Support Windows Server 2025, 2022, 2019, 2016, 2012
AOMEI Partition Assistant

Unlimited

From $ 399 .00
Buy Now
Free Trial >>
  • One license for unlimited PCs and servers
  • Support Windows 11, 10, 8.1, 8, 7, 7 SP1
  • Support Windows Server 2025, 2022, 2019, 2016, 2012
  • Create portable version
    Install AOMEI Partition Assistant to a removable device so as to directly run it on target computers without installing, which is convenient for IT maintenance and support engineers.
  • Unlimited usage within one company
Tips:
If you need to provide billable technical services to your clients, please refer to AOMEI Partition Assistant Technician Edition.
To learn detailed features of each edition, please refer to edition comparison.

You may still be wondering...

  • FAQs
  • How It Works
  • Tech Specification
How to reorganize partitions in Windows?
To reorganize partitions in Windows, there’s the built-in Disk Management tool that provides basic tasks like shrinking or extending partitions, but it doesn't support moving or reallocating space easily. As an easier and more flexible alternative to Windows built-in tool, a specialized disk partitioning software allows you to resize, move, merge, and split partitions with more custom control over your disk storage.

Third-party tools are generally safer and more efficient when reorganizing partitions, especially if you need to move or rearrange partitions across unallocated space.
What should I do before extending my partition?
Before extending your partition, it’s important to take precautions to avoid data loss or system issues. Here’s a checklist:
1. Back up data: Always create a backup of your important files or the entire partition.
2. Free up space: Ensure there's enough unallocated space next to the partition you want to extend. If not, you may need to shrink another partition to make space.
3. Check disk health: Run a disk check to make sure your drive doesn’t have errors or bad sectors. Use Windows’ built-in "chkdsk" tool or a third-party tool.
4. Ensure compatibility: If you're working with partitions on different styles (MBR vs. GPT), check if your system supports the changes you're trying to make.
5. Defragment (if HDD): If you have a traditional hard disk (HDD), it's a good idea to defragment it first to optimize space usage.
6. Avoid interruptions: Make sure your system won’t be interrupted during the process (e.g., no power loss or forced shutdowns). A power surge could corrupt your partition table.
How do I enlarge my C partition with free space on other partitions of the same disk?
To enlarge your C: drive using free space from other partitions, start by backing up important data. If necessary, shrink another partition (e.g., D:) to create unallocated space next to C:. In Windows Disk Management, right-click C: and select "Extend Volume" to add the unallocated space. Alternatively, third-party tools like AOMEI Partition Assistant can simplify the process, especially when moving partitions.

After extending the partition, restart your system and verify that the changes were applied successfully. Make sure to check the data integrity of your C: drive post-expansion.
Is it possible to convert MBR to GPT without losing data?
Yes, you can convert MBR to GPT without losing data, using tools like MBR2GPT in Windows or professional disk and partition management software. The MBR2GPT tool, available in Windows 10 and later, allows you to convert the disk through Command Prompt without data loss, provided the disk meets certain conditions (like having unallocated space and UEFI support).

However, a reliable and specialized tool is often easier to use and offer more flexibility, for it handles more complex situations and provides a safer, more user-friendly experience. It's also a good idea to back up your data beforehand, as unexpected issues may arise. Also ensure your system supports UEFI for booting from GPT.
How to free up space in partition?
Besides cleaning up your computer manually (which takes quite some time and efforts) or if your manual cleanup didn’t work out well, you’re advised to use a comprehensive disk management tool. It helps tweak your partitions to the most ideal allocations in the first place, and is able to automatically detects and removes large & unused files, identified files, temporary files and registry errors wholly in a few clicks. Compared to do it manually on one’s own, there may be data loss risk and it’s highly computer skill demanding.
  • Convert Disk between MBR and GPT

    Locate the target disk in the main interface, right-click the disk, and select “Convert to GPT” or “Convert to MBR”. Confirm the operation in the pop-up window, then click “Apply” in the toolbar to execute the conversion.

  • Migrate OS to HDD or SSD

    Click the “Clone” tab and select “Migrate OS”. The system-related partitions will be selected as the source by default. Choose the destination disk, confirm the layout, and adjust partition sizes if needed. Click “Apply” and “Proceed” to start the cloning process.

  • APP Mover

    click “Free Up” in the top menu and select “APP Mover”. Choose the applications you want to move, select the destination partition or disk, and start the migration process to move apps without reinstalling them.

Operating System
Windows 11
Windows 10
Windows 8.1/8
Windows 7
Adopted Technologies
Improved algorithms to ensure a faster & safer process of moving partition.
Enhanced data protection technologies to keep data safe.
Flexible and adjustable drag & drop interface making what was complicated simple.
Preview any partitioning tasks before apply to the hard disk.
Optional automatic power off for the computer after all operations are completed.
Supported Device Types
Traditional hard disk drive (HDD), solid-state drives (SSD) and SSHD.
External hard drive (USB 1.0/2.0/3.0), PC card, All Flash Drives and Thumb Drives and other removable media.
All storage devices recognized by Windows, such as IDE, SATA, iSCSI, SCSI disk, IEEE1394 (FireWire), etc.
Hardware RAID, including RAID 0, RAID 1, RAID 5, RAID 10, etc.
Support MBR disk and GPT disk up to 16TB+.
Support up to 128 disks in one system.
Completely support hard disk with 4096, 2048, 1024, 512 bytes sector size.
Support virtual disk partition in VMware, Virtual Box and Virtual PC etc.
Support UEFI/EFI boot.
Supported File Systems
NTFS
FAT32/FAT16/FAT12
exFAT/ReFS
Ext2/Ext3/Ext4
Bitlocker, other file systems
*Tip: The marked file systems cannot be resized but you can move and clone them.

See What the Experts and Users Are Saying

AOMEI Partition Assistant Professional Edition is a versatile and easy-to-use tool for disk and partition management, offering far more options than the built-in Windows utility and working well for both beginners and advanced users.
AOMEI Partition Assistant gives you full control over disks and partitions, making it simple to manage or clone them. With the Disk Copy or Partition Copy Wizards, you can quickly duplicate drives or partitions for migration, backup, or upgrades while keeping data intact.
AOMEI Partition Assistant is one of the best partition tools I’ve used. The Standard version suits most users, and the Pro version adds top-tier features. Despite a few small issues, the Windows To Go feature more than makes up for them.

John J. Hayes

I’ve been using AOMEI Partition Assistant for a while, and it’s a game-changer. My C drive was nearly full, and the program let me shrink another partition and extend C without any data loss. The process was smooth and very user-friendly. Highly recommended.

Ben Parker

As an IT professional, I’m always looking for reliable disk tools, and AOMEI Partition Assistant exceeded my expectations. It resized partitions and merged drives with zero issues. Support for both MBR and GPT disks is a big bonus and saved me a lot of time.

Stewart Mitchell

I recently purchased AOMEI Partition Assistant, and it’s one of the best partitioning tools I’ve used. Expanding my almost-full C drive was incredibly easy. I only wish it had more advanced RAID options, but overall it’s great.

Experience AOMEI Partition Assistant Professional Now

Get powerful partition management tools for seamless disk optimization, effortless space management and smart PC tune-up.