By Ivy / Last Updated October 20, 2020

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Can I clone a hard drive to a larger one?

“A few days ago, I received a “low disk space warning” window when I open my computer. After that, no matter what I do, it will pop up and says,”the disk space is not enough”. So, I cannot add any files, folder or install any programs on my computer. Is it possible to clone disk to larger disk? Thanks.”


Yes, you could clone hard drive to larger disk. To successfully clone a hard drive and ensure secure boot, you need a professional software. I highly recommend you free AOMEI Backupper Standard. It could not only help you clone hard drive to larger drive, but also clone to smaller disk. And it’s suitable for all users, even computer novice, because this software has a clear interface and user-friendly design.

How to clone disk to larger disk in a few steps?

Cloning disk to larger drive with disk cloning software in Windows Vista/XP/7/8/10 is the prior choice, because it will completely transfer your system, previous installed programs, files and folders to another disk. And, you can boot successfully from the cloned disk. In addition, you can do whatever you want during the cloning process, because it will run in the background.

To finish disk cloning process, you need to do some preparations ahead of time.
Prepare a larger disk and SATA-to-USB cable or another adapter. The cable or adapter is used to connect your disk to your computer. If you do not have any of them, you can backup Windows to NAS first, then swap your disk to larger disk, boot your computer using bootable disk and restore it to the larger disk.
Backup your important files on destination disk. This is because all your data on the destination disk will be deleted at last.

Upgrade to a larger hard drive with AOMEI Backupper

Now, plug the prepared disk into your computer and then clone disk to larger disk with the following steps in Windows 7/8/10:

Step 1. Download AOMEI Backupper Standard, install and enjoy it.

Step 2. Enter the main page of AOMEI Backupper, click Clone and Disk Clone subsequently.

Disk Clone

Note: This version only supports cloning system disk with the same partition style, such as, cloning GPT system disk to GPT disk. But if you want to clone GPT system disk to MBR or vice versa, you could consider upgrading to AOMEI Backupper Professional.

Step 3. Select your Source Disk (here is Disk0)and click Next.

Select a Source Disk

Step 4. Find the disk you plug in and set it as Destination Disk (here is Disk1), then click Next.

Select a Destination Disk

Step 5. Confirm the details of both disks and click Start Clone.

Clone Disk to Larger Disk


  • The cloned hard drive shows wrong size is a great headache for users who want to clone HDD to larger HDD or SSD. But in the Professional version of AOMEI Backupper, it can be easily solved by "Edit Partitions" feature, which allows you to adjust the size of destination disk during the clone process.

Edit Partition

  • It's recommended to tick "SSD Alignment" if you clone disk to larger SSD, because it can help you accelerate the writting and reading speed of SSD disk.

  • Use Intelligent Clone to clone larger hard drive to smaller hard drive, because this software only clones the used sectors instead of all the sectors.

  • Besides, this software can also be applied to clone laptop hard drive to larger disk, clone C drive to larger drive, clone smaller SSD to larger SSD, clone SSD to larger SSD Samsung, etc.

  • To migrate OS only, you may need to turn to System Clone feature of higher editions.

Another Way to copy boot drive to larger drive

In addition to cloning HDD to larger HDD, AOMEI Backupper still offers you another way to users - it's backup and restore. This way is very useful in case of unexpected failure, such as, system crash, disk failure, virus attack etc.

You need to create a disk backup ahead of time, then you can restore disk image when needed. Now, have a closer look at how it works.

Step 1. Create a disk backup with AOMEI Backupper. At the main page, click Backup and Disk Backup, then finish the rest of steps via on-screen instructions.

Disk Backup

Step 2. Connect the disk containing backup image and destination disk to your computer. Then open this software, click Restore and Select Task in order.

Select Task

Step 3. Select a disk image from the list and click Next.

Select Backup Image

Step 4. Tick Restore the entire disk and click Next.

Select Entire Disk

Step 5. Select the destination disk and click Next.

Select Destination 1

Step 6. Preview the details and click Start Restore. If you want to restore disk image to a computer with different hardware, you can use Universal Restore on the Professional version.

Preview And Restore

Boot from larger cloned or restored disk

Whether you use disk clone or disk backup and restore, the boot process is very similar, so here I'll only talke about a rough process.

To boot from the new disk, you need to switch the smaller disk and larger disk, then restart your computer, press specific key (eg: Del, F2, ESC) on the initial screen to enter BIOS, go to the Boot tab and change the new disk to the first boot option, finally hit F10 to restart your computer. Please note that you need to pull out the old disk at 30 or 45 degrees.


Plus: why clone hard drive to larger drive?

For reasons to clone smaller disk to larger disk, the most commonly reasons is to solve low disk space issue and increase disk capacity. Besides, there are some others reasons. See below and get the details.

Low disk space warning

Many of computer users will encounter “low disk space warning” in the daily life. And you couldn’t install any applications or save any files or folders to computer after this error message occurs. Even worse, your computer will run more slowly than before.

To solve this problem, some users try to clone smaller disk to larger disk, because they know only when this error disappears, they could mount applications or files to computer again.

Low Disk Space Warning

Other reasons to clone disk to larger disk

  • Just want a larger disk. With a larger disk, you can save more files, pictures, video, etc. Anyhow, a larger disk could be a greater choice. Thus, sometimes, you just want a larger disk and there's no reason for it.

  • Replace old disk with a new one. When you use a disk for several years, you may feel it’s too old and cannot satisfy your needs from all sides. You may want to replace it with a newer disk.

  • Increase the performance of your computer. If you are not satisfied with the performance of your computer and want to run computer more smoothly, you can clone SSD to larger SSD.


When you search “clone disk to a larger disk” in the forums, such as, Reddit, Microsoft, you may get some information about”cloned hard drive won’t boot”. In a word, the cloning process failed. So, a trust and reliable disk cloning software is essential for disk clone.

AOMEI Backupper is one of the most reliable disk clone software, which is suitable for all users, even for a beginner. And it helps you fix cloned hard drive unallocated space left and offers you extra features, such as, SSD Alignment, Sector by Sector Clone, etc.

And it's not only a disk cloning software but also a backup and restore software. And you can enjoy System Backup to migrate OS to SSD, Partition Backup, Disk Backup, System Restore, etc.

Give AOMEI Backupper a chance, then it will give you a great user experience.