By Bryce / Last Updated June 17, 2021

Need to copy all data from one hard drive to another

The two main motivations to transfer/copy data from one disk to another are concluded as follows:

☞ Transfer all data from a traditional hard disk drive with Windows installed to a solid-state drive or larger hard drive; thus you can upgrade system hard drive without reinstalling Windows.
☞ Clone all data from internal hard drive to external hard drive for duplication; compared with backup, it allows you to access data without restoring if the system crashes or something else happens.

For moving/cloning files from one hard drive to another, you might consider using copy & paste function. However, this way can be time-consuming when there are lots of files and folders on your hard drive. And some applications & OS won’t work normally on the new hard drive. Therefore, you can employ hard drive cloning software to copy the whole hard drive to another.

Here AOMEI Partition Assistant Professional will be my first choice. It can clone all files, including boot.ini from one disk to another. After cloning system hard drive to another drive, you can boot from the new drive in success.
It can clone only used spaces on the source hard drive, thus you can copy all data from one hard drive to a smaller one if the size of the target one is not less than the size of the used space.
What’s more, it is able to copy only OS drive (data partitions not included) from one disk to another.

Step to clone the whole hard drive to another 

What you ought to realize before you copy/migrate all data from one hard drive to another through cloning disk:

▪ All data saved on the target hard drive will be cleaned, thus back up your necessary files in advance.
▪ The capacity of the destination disk should be not smaller than the used space of the source disk.
▪ To boot successfully from cloned disk, it is necessary to change boot mode after you clone MBR system disk to GPT or GPT to MBR.

Then, connect the destination disk to your computer and make sure it can be recognized, and follow the steps given below (Take cloning system hard drive to smaller one in Windows 10 as an example). You can download its demo version to have a try at first!

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

Step 1. Install and run AOMEI Partition Assistant Professional. In the main interface, select All Tools and Disk Clone Wizard.

disk copy wizard.png

Step 2. In the pop-up window, choose Clone Disk Quickly between two options.

copy disk quickly.png

Step 3. Here you need to choose a disk as the source disk (Disk 1 is selected).

select source disk.png

Step 4. After specifying the source disk, you need to choose the destination disk (Here is Disk 2).

select destination disk.png

PS.: If your destination is SSD, tick Optimize the performance of SSD.

Step 5. In this window, you can choose Fit partitions to the entire disk or Edit partitions on this disk. Then, click Next.

edit disk.png

PS.: Clone without resizing partitions is grayed out as the destination disk is smaller than the source disk, when it comes to cloning to a larger hard drive or hard drive of equal size, the first option will be valid.

A Note about how to boot from the destination disk will show up. Keep it in mind and click Finish.

clone large disk to small disk/finish.png

Step 6. Here you can preview the result of operation. Click Apply to commit it..

clone large disk to small disk/apply.png

Final words

You can easily transfer/copy all data from one hard drive to another with AOMEI Partition Assistant Professional. And it is very helpful in managing partition and disk. You can use it to allocate free space, recover deleted partition, split partition, and so on. It is compatible with Windows 10/8.1/8/7, XP, and Vista. To clone one hard drive to another in Windows Server, you can use AOMEI Partition Assistant Server.