By Nicky / Last update August 3, 2021

Problem: Cloned drive won’t boot in Windows 10

Sometimes, we may need to clone a hard drive. For example, we clone hard drive to SSD to upgrade, clone hard drive to a larger one to save more files, or just to make a disk backup, etc. Nevertheless, the issue that cloned disk won’t boot windows 10 occurs frequently after cloning. Here is a live example from forum.

“I bought a SSD with the intent of cloning my HDD. I used Macrium Reflect and after some trial and error, got the process completed. Through the USB to SATA cable, the computer is recognizing the new drive and all the data as F. 

When I swapped the drives, the BIOS says it can't boot because there's no hard drive. I put the old drive back in and checked disk management. The old drive says the main partition contains ‘boot, page file, crash dump, primary partition’ while the primary section of the new drive just says ‘primary partition’. The drive I was cloning was a little bigger in capacity, but I didn't fill up the drive anyway, so I reallocated the space in Macrium. I assume that for some reason Windows 10 didn't get ported over to the new drive.”

Easy ways to make cloned drive bootable in Windows 10

Why cloned SSD won’t boot?

1.       The cloned drive is not set to boot.

2.       Boot configuration data got corrupted during migration. You might find that the BCD data gets corrupted during the migration process.

3.       GPT/MBR conflict.

How to fix it?

Method 1. Change boot order to boot from the cloned SSD

If there are more than one hard drive on your computer, when you boot failed, you need to consider whether it is wrong of your boot device. If it is, you need to get into BIOS and change the boot order to boot from the cloned SSD.

Method 2. Remove / Wipe the previous drive

Several cloning utilities will also copy the drive’s unique ID, which ends up confusing the system. Since it won’t know where to boot from, you can make only one of the drives usable by removing or wiping the original drive.

Method 3. Restart the Cloning Process and Fix the Errors

If you have encounter errors during the cloning process, you can either choose to fix the error or restart the cloning process. This will certainly help you fix the unbootable problem.

It is highly recommended that you use the best free cloning software – AOMEI Backupper Standard which allows you to clone HDD to SSD with simple steps. And it can make SSD bootable after clone in Windows 10 successfully.

Cloning Windows 10 boot drive with reliable software

AOMEI Backupper Standard is a reliable software that can help us to clone Windows 10 boot drive safely and efficiently, so, in this way, we can avoid some booting problems. Follow the steps to clone Windows 10 boot drive easily.

Note: After the clone, the target disk will be overwritten, so data backup must be done in advance.

Step 1.Connect the SSD to your computer and make sure it can be detected. Then download  AOMEI Backupper, install and launch it.

Download Freeware Win 10/8.1/8/7/XP
Secure Download

Step 2. Click Disk Clone under the Clone tab.  

Disk Clone

Step 3. Select the HDD as the source disk and click Next.

Select Source Disk

Step 4. Select SSD as the destination disk.

Select Destination Disk

Step 5. Tick the SSD Alignment option to accelerate the reading and writing speed of the SSD. And click Start Clone.

Start Clone 2


  • AOMEI Backupper Standard cannot support System Clone. If you want to clone system, you can upgrade to AOMEI Backupper Professional to enjoy this function.

  • The "Sector by sector clone" option is also available. It allows you to clone all sectors on source disk no matter they are used or not to destination disk. If you clone a large hard drive to a smaller SSD, do not choose this option.

  •  If you clone a small disk to a larger disk, you can click the button of "Edit Partitions" and choose “Add unused space to all partitions” or “Manually adjust partition size” to use full capacity of the larger disk. The two options are available in higher editions.

  • To get the best performance of cloned drive, it's suggested to clone Windows 10 to NVMe SSD. Because it has the fastest transfer speed.

  • This software is still a M.2 SSD cloner, thus you can use it to migrate Windows 10 to M.2 SSD, clone M.2 SSD to M.2 SSD, etc


If you have met the issue that cloned drive won't boot, you can try the above repair methods so as to make cloned drive bootable in Windows 10. And if you want to avoid the booting problems, AOMEI Backupper, the best disk cloning software, will help to clone hard drive easily and safely.

Apart from the clone feature, AOMEI Backupper owns the backup and restore features. Keep it installed after cloning and set continuous data protection for your computer.