By Teresa / Last Updated January 8, 2020

Need to Resize Hard Drive during Cloning

"I’m trying to clone my 500GB Windows hard drive to 1TB new drive and wondering if I can resize partitions on the destination and fit the large drive. Otherwise, there would be around 500GB extra unallocated space left on the end of the disk which is not what I want. Google online and found that some cloning software do not let their users resize hard drive. Is there any reliable cloning tool to help resize disk in cloning? Thanks in advance."

That is a case on cloning hard drive with different sizes, from smaller hard drive to bigger specifically, in Windows. Cloning hard drive to another hard drive or SSD is a good way to upgrade disk and improve computer performance. Also, it saves time and efforts comparing to reinstalling Windows and programs in the traditional way.

Some users may also search for the software when cloning from larger drive to smaller drive. Certainly, finding a powerful disk cloning utility is fairly important.

Complete Software to Clone and Expand Hard Drive

It is unlucky that Windows misses the clone feature in all utilities. As a result, turning to third party software would be a wise choice. However, not all software has been created equally. Some cloning software does not provide a way to adjust partition size during cloning, or it is not easy for common computer users to operate.

AOMEI Backupper Professional is reliable and comprehensive cloning software that helps you clone and resize hard drive easily with secure boot. After selecting source and target disks, there is an option at the summary interface providing three ways of resizing partition for that task.

To be specific, when you click Edit partitions on the destination disk, you'll see these options: Copy without resizing partitions, Add unused space to all partitions, and Manually adjust partition size. The last two options allow you to resize and expand hard drive varying.

In addition, the software does 4K alignment for SSD when you clone hard drive to SSD as well. Windows 10/8/7/XP/Vista are supported. Get this software to clone hard drive and resize partition now.

How to Clone Hard Drive and Resize Partitions Step by Step?

In the first place, connect the target disk to your computer correctly and make sure it can be detected. Note that the disk will be overwritten after cloning, so backup hard drive in advance if necessary.

1. Install and run AOMEI Backupper. Click Disk Clone under the Clone tab.

Choose Disk Clone

2. Select the source disk you’d like to clone from and click Next.

Choose Source Disk 1

3. Select the destination disk you’d like to clone to and click Next.

Choose Destination Unallocated Hdd

Tips: To clone from GPT to MBR, AOMEI Backupper supports copying up to 3 partitions at a time. If there are more than 3 partitions on the source GPT disk, you can merge partitions without data loss before cloning or clone other partitions in the next time.

4. At the Operation Summary page, click Edit partitions on the destination disk in the lower-left corner.

Disk Clone Preview Nocheck

5. In the popping up window, select one of the methods according to your own need. The last one would be more flexible.

Add Unused To All

6. Preview the operations and then click Start Clone.

7. (Optional) Change boot order after cloning or just replace the old drive with the cloned disk if you've cloned system disk and want to boot from the drive.


  • Checking "Sector by sector clone" option will make "Edit partitions on the destination disk" unavailable.

  • Tick "Align partitions to optimize for SSD" to improve reading and writing speed if you clone to SSD.

  • When you clone from large drive to smaller drive, the option "Copy without resizing partitions" in "Edit partitions on the destination disk" will be grayed out.

  • To resize partition when you clone hard drive with different size in Windows Server operating systems, please refer to AOMEI Backupper Server edition.


AOMEI Backupper Professional provides an easy way to clone and resize hard drive in Windows. It allows you to clone large drive to smaller drive or clone smaller drive to larger drive, and adjust partitions to a desired size at the same time. Except for disk clone, you can also clone boot drive to SSD by System Clone while keeping files on HDD with the software. The Partition Clone feature even assists you in cloning dynamic volumes.

After cloning, it is suggested to keep AOMEI Backupper installed as the protection for your computer. Create a backup task, system backup, disk backup, and/or file backup, to protect your crucial and sensitive data efficiently.