AOMEI Partition Assistant Standard

Safely Manage Your Hard Disk Partitions without Any Data Loss

  • FREE partition manager software for personal and home use.
  • All-in-one hard disk management tool for optimal performance.
  • Clone hard drive from one to another for migrating data entirely.
  • Convert data disk between MBR and GPT without losing data.
Recommended by top media

AOMEI Partition Assistant Standard

Tap into the disk potential and manage partitions efficiently

AOMEI Partition Assistant Standard is FREE disk partition software, which has earned its reputation among users worldwide. It comes with so many powerful features that allows you to completely control your hard disk and partitions. For example, the "Resize Partition" enables you to increase partition size to solve low disk space problems, or shrink partition size to make partition size more reasonable. You can flexibly manage disk space with "Create Partition", "Merge Partitions", "Delete Partition", "Format Partition", "Copy Partition" and so on.

  • AOMEI Partition Assistant embeds sector-level data protection technology.
  • It enables you to realize even safer partitioning operations that meet your expectations.
  • It can help you solve all manner of problems on your disk partitions, regardless of MBR or GPT styled disks or the size (small or larger than 2TB) of your disks.

Focus on Your Demands and Problems

AOMEI Partition Assistant brings an extensive range of features for flexible partitioning, PC optimization and managing your hard drives.
  • Partition
  • Clone
  • Convert
  • Boot
  • Free up
  • Wipe
  • Test

All-in-One Partition Manager

Simply resize, move, create, delete, format and merge partitions with a few mouse-clicks. Managing hard disk partition is easier and more powerful than Windows Disk Management.

  • Resolve Windows built-in Disk Management “Extend Partition” is greyed out.
  • Workaround for C: drive is almost full, while D: drive is nearly empty.
  • Fix low disk space warning and partition showing red in Windows explorer.

Disk Partition Clone Wizard

The Partition Copy Wizard provides two methods for cloning/transferring partitions. With Disk Clone, you can easily upgrade hard disks and transfer a large amount of data from one disk to another.

  • Clone hard drive or partition from one to another for backup.
  • Clone smaller hard drive to larger drive for upgrading disk without losing data.
  • Clone HDD to SSD for better performance.

Safe & Effective Disk Converter

Quickly and safely convert MBR disk to GPT disk or convert GPT disk to MBR disk to compatible with different disk style requirements. Convert between NTFS and FAT32 without losing data.

  • Break out the limitation of MBR disk such as MBR supports up to 3 primary partitions and 1 extended partition.
  • Take full use of a hard drive that more than 2TB.
  • Convert file system to NTFS or FAT32 to compatible with other systems.

Migrate or create a portable Windows system to USB

Install your customized Windows 11, Windows 10, Windows 8.1/8, and Windows 7 on a removable drive to realize BYOD and keep your own work environment everywhere.

  • Carry your operating system and personal files with you wherever you go, and use them on any compatible computer.
  • A portable Windows system on a USB drive can serve as a backup in case your primary computer fails or becomes unusable.
  • To troubleshoot and repair issues on other computers.

Clean PC to Get More Space

Precisely remove junk files to free up space or using App Mover to free up C: drive for improving the performance of your PC.

  • Optimize PC’s performance through free up space.
  • Solve C: drive full problem by doing a PC clean.

Wipe Hard drive and Partition Completely

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

  • Sell your old disks to others and don't want to become a victim of privacy leak.
  • Donate your used hard drives to friends, charity, church, or a school.
  • Worry about there is a virus or ransomware on a second-hand disk before using it.

Analyze Disk and Partition

Diagnose disk health, test whether there is bad sectors on the disk, and test the read and write speed of the disk. Check Partition and fix errors by using chkdsk.exe.

  • Monitor disk health to effectively avoid data loss because of disk damage.
  • Test disk surface to find out bad sectors.
  • Test read or write speed of your hard disk.

Worry-free and Reliable Disk Partition Software

The Most Comprehensive Windows Free Partition Manager

Hunting for an easy-to-use free disk partition software to fix hard disk partition problems for Windows OS? AOMEI Partition Assistant Standard is the right one for your PC, guaranteeing you get a full suite of features for creating, resizing, deleting, merging, and formatting partitions, and so on.

Smart Disk and Data Management Wizard

Easy step-by-step wizards guide you through the process of transferring system and data to another location for different purposes, recovering files to get data back, and converting disk to meet software and hardware requirements.

Useful and Must-Have PC Tools

Give you these tools to better optimize and manage your computer so that you can get the most out of your system.
  • Partition Manager
  • Smart Wizard
  • PC Tools
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 Partition
Create Partition

Create partitions from an unallocated space or existing partition for different data storage need.

Check Partition
Check Partition

Check partitions to find errors or bad sectors, and then help you fix them.

Delete Partition
Delete Partition

Delete a partition if we don' t need it anymore and an unallocated space will be generated.

Format Partition
Format Partition

Format a partition to another different file system such as NTFS, exFAT, Ext 4, Ext3, Ext2 or FAT32.

Convert to NTFS/FAT32
Convert to NTFS/FAT32

Change file systems between NTFS and FAT32 without reformatting the partition.

Rebuild MBR
Rebuild MBR

Repair Windows unbootable issues due to the damaged Master Boot Record without destroying any data.

Dynamic Volume Management

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

Disk/Partition Clone
Disk/Partition Clone

Efficiently clone a data (non-system) disk or partition to quickly transfer its contents to another hard drive for hard drive upgrade or data backup.

Migrate OS
Migrate OS Pro only

Move operating system, boot information, programs, and files to a faster SSD or a larger hard disk without reinstalling Windows.
Upgrade to Pro

Data Recovery
Data Recovery

Quickly search and get back files in various data loss scenarios, such as deletion, formatting, RAW drive error, partition loss, virus attack, etc.

App Mover
App Mover

Move applications and their related Cache & Downloads folders, or large video folders from one drive to another to free up space.

Dynamic Disk Converter

Convert a dynamic disk to basic disk, or convert a basic disk to dynamic disk without losing any data.
Upgrade to Pro

MBR/GPT Converter
MBR/GPT Converter

Convert a data (non-system) disk from MBR to GPT for breaking the 2TB limit, or from GPT to MBR for better compatibility.

Windows To Go Creator
Windows To Go Creator

Build a customized Windows 11, 10, 8.1/8, 7 on removable USB drive to boot it from any computer.

Make Bootable Media

Create a Windows PE bootable CD/DVD or USB to troubleshoot disk partition problems when the system fails to boot.
Upgrade to Pro

Integrate to Recovery Environment
Integrate to Recovery Environment

Run AOMEI Partition Assistant from Windows built-in recovery environment of current system.

Initialize Disk
Initialize Disk

Initialize an offline or unknown not initialized disk to either the MBR or GPT partition styles.

Test Disk Speed
Test Disk Speed

Rapidly measure sequential and random read/write speeds of HDD and SSD to test disk performance.

Defrag Disk/Partition
Defrag Disk/Partition

Analyze the hard disk partition and rearrange fragmented data to optimize disk performance.

Wipe Data
Wipe Data

Erase a disk or partition permanently to prevent sensitive data from being recovered.

Shred Files
Shred Files

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

PC Cleaner
PC Cleaner

Remove all kinds of junk files from your computer to free up more space and improve computer performance.

Change Serial Number
Change Serial Number

Modify the serial number for you disk volume without reformatting hard drive.

Check Disk Health
Check Disk Health

Monitor disk health status to replace a disk or migrate the data before it fails completely.

Change Drive Letter
Change Drive Letter

Bring order out of chaos and reorganize your drives in a certain way.

Get More Out of AOMEI Partition Assistant with Professional

AOMEI Partition Assistant Professional Edition includes all the features of the Standard Edition and offers additional tools for easier disk partition management. For more advanced partition and hard drive management capabilities, get AOMEI Partition Assistant Professional now.

Partition Assistant Standard Partition Assistant Professional
Features Only differences
Download Freeware

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One license for 2 PCs

Support Windows 11, 10, 8.1/8, 7, Vista and XP
Create, Extend, Shrink, Move, Delete, Format, Merge, Clone Partitions
Convert Data Disk to MBR/GPT, Convert to NTFS/FAT32
Defrag Disk, Clean up Junk Files, Shred Files, Wipe Data
Check Bad Sectors, Check Disk Health Status, Test Disk Speed
Migrate OS from HDD to SSD, Clone System Disk to Another
Recover Lost or Deleted Files/Partitions
Move Apps and Folders from One Drive to Another
Convert System Disk between MBR and GPT
Convert Dynamic Disk to Basic Disk, Dynamic Disk Management
Allocate Free Space from One Partition to Another
Create Windows PE Bootable Media
Business Use

Learn more differences and more editions, please refer to edition comparison.

Technical Specification

Supported Operating Systems

  • Windows 11
  • Windows 10
  • Windows 8.1/8
  • Windows 7
  • Windows Vista
  • Windows XP

Supported File Systems

  • NTFS
  • FAT32/FAT16/FAT12
  • exFAT/ReFS *
  • Ext2/Ext3/Ext4 *
  • Other file systems *
  • *  The file system cannot be resized but you can move and clone them.

Supported Storage Devices

  • Traditional hard disk drives, solid-state drives (SSD) and SSHD, etc.
  • External hard drives (USB drives), PC cards, all Flash Drives and Thumb Drives and other removable media.
  • All storage devices recognized by Windows, such as RAID, etc
  • Support MBR disk and GPT disks over 16TB.
  • Support UEFI/EFI boot.

Over 60 Million Users Worldwide Trust AOMEI

I’ve been using AOMEI Partition Assistant for many years and have found it one of the best free partition manager for Windows computer on the market.

—— Karim NouriUnited States

Many features. I was impressed by the tool to diagnose and fix whole disks, not only partitions. Thank you AOMEI for the excellent work you do.

—— Dimitri VerreaultCanada

It is a fantastic tool. Not only for normal issues like extend, shrink, and move partitions, but also for finding lost files. Highly recommend.

—— Brandon FischerAustralia

AOMEI Partition Assistant is an excellent yet free partition software, allows you a level of control and function beyond Windows disk management tool.

—— Kieran GrayUnited Kingdom

Free Get AOMEI Partition Assistant Standard Now

Easily and safely maximize disk space usage and optimize performance of your Windows computer.