How to Sector-by-Sector Clone SSD Successfully in Windows 10/8/7?

When you need to clone SSD sector by sector, you can use the AOMEI Partition Assistant Professional. It allows you to finish sector by sector clone SSD and then make an exact same copy of the target disk.


By Emily / Updated on June 6, 2024

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What is a sector by sector clone?

The sector by sector clone SSD or HDD is to copy all sectors, even if the sector is blank or has a logically bad sector, from the source disk or partition to the destination location. This clone method can ensure that the destination hard disk/partition is exactly the same as source hard disk/partition.

Therefore, the target HDD or SSD must be at least equal in size to the source disk being cloned. If the destination disk is larger than the source disk, the rest disk space will become unallocated space after cloning. And you cannot sector by sector clone to smaller SSD.

When need sector by sector clone SSD/HDD?

As explained above, the sector-by-sector clone will copy all sectors (used or empty) of the selected disk/partition to another location. And this method is quite useful and necessary in the below cases:

When your hard drive is encrypted with BitLocker and the regular cloning method cannot access data on it and finish the disk copying task, you can use a sector-by-sector clone method to copy it without unlocking the drive.
If your system hard disk is failing now and about to die, you can copy the system disk sector by sector, then you will be able to run easy recovery on the new disk rather than on the failing one.
When you need to copy the deleted (not wiped) data stored on the source disk to the destination disk, sector-by-sector clone SSD/HDD is a great option.

Best sector-by-sector clone software

To clone SSD or HDD sector by sector, you need to apply a reliable sector-by-sector copy tool. Here we recommend trying AOMEI Partition Assistant Professional. It is compatible with all versions of Windows  11/10/8/7 and Windows XP/Vista (32 bit and 64 bit).

It comes provides the “Sector-by-Sector Clone” method for both copying an entire hard disk and cloning a specific partition to SSD or HDD. So you can clone a whole disk or a certain partition sector by sector from one disk to another in Windows PC. And its contrary copying solution is to clone only used sectors to the destination location. Besides, if the destination disk is an SSD drive, you can align SSD partitions during the cloning process to optimize its data reading and writing performance.

How to sector by sector clone SSD in Windows 10/8/7?

In this section, we would like to tell you how to perform sector-by-sector clone SSD or HDD task step by step via the recommended AOMEI hard drive cloning tool.

★Before you start, please note:
Ensure the destination disk has an unallocated space to hold all sectors from the source disk. If there is no unallocated space, you can delete or shrink other partitions to get one first.
The destination partition/disk should be equal or larger than source partition/disk.
Back up important files on the destination disk because they will be deleted after cloning SSD or HDD sector by sector.

You can download the Demo Version for a free trial.

Free Download Win  11/10/8.1/8/7
Secure Download

Step 1. Install and launch AOMEI Partition Assistant, click "Clone" in the main interface and select "Clone Disk".

Disk Copy

Step 2. Choose the hard disk that you need to clone as the source disk and click "Next".

Copy Disk in Windows 10 Quickly

Step 3. Select the destination disk to store the data on the source disk, and then click "Next".

Seleect Destination Disk

Step 4. Then, you can check the source and destination disk in the next window or change to “Sector to Sector clone”, and click the "Confirm" button to continue if there is no problem.

Edit Disk

Here, you can also click the "Settings" button to adjust the partition size on the destination disk or tick "4k alignment" to improve the reading and writing speed of SSD if the target disk is an SSD drive.


Step 5. At last, click "Apply" and "Proceed" in the main interface to start cloning the hard drive.


Step 7 (optional). Boot computer from the cloned SSD or HDD.

7.1. Reboot your computer and press a specific key (usually the DEL, ESC, F2, F8, F9, F10, F11, F12) constantly to enter the BIOS menu.

7.2. In the BIOS tab, use the arrow keys to set the cloned SSD/HDD as the prior boot drive, and save the changes and exit. Then boot computer from the cloned disk.

Change Order


What if sector-by-sector cloned SSD or HDD not boot?

If the cloned SSD or HDD won’t boot after cloning process, you can check the following possible reasons.

1. The source disk has some bad sectors and cannot boot, either.

2. The SSD drive connection cable is loose or damaged.

3. SSD is not set as the first boot drive.

4. Partition style is not compatible with the boot mode (MBR goes with BIOS whereas GPT goes with UEFI). Upgrade BIOS to UEFI or switch UEFI to BIOS based on your situation.

5. System partition was not set as an active partition.

6. Some boot related drives or partitions such as system reserved partition are missed and not cloned to the destination disk.


With the help of the AOMEI Partition Assistant Professional, you can easily clone SSD/HDD sector by sector, no matter clone HDD to SSD, or HDD to SSD in Windows 10/8/7 computer.

If your disk is of insufficient space for cloning disk or partition sector by sector, it also provides a workaround method called “Clone Disk Quickly” to only copy used space from one disk to another, allowing you to clone large drive to smaller drive. Last but not least, if you want to perform sector by sector clone SSD/HDD operation on Windows Server computer, try the AOMEI Partition Assistant Server.

Emily · Staff Editor
Emily is an English editor of AOMEI Technology; she has a great passion for providing easy solutions for people to tackle with all disk or partition management problems. In addition to writing articles about disk/partition management, she also edits great tutorials on how to back up and restore disk for data security. In her spare time, she loves to learn computer skill to improve herself or stay with her family to enjoy a good day.