By Lily / Last update September 22, 2021

Need of replacing C drive in Windows 11/10/8/7

In general, C drive is the main hard disk partition which contains the operating system and the related system files. It is also used to store applications and their related files. You see the importance of C drive and you may need to replace C drive in following situations:

  • Your current drive has experienced a hardware failure and you can’t fix it.

  • Your C drive is on an HDD and you want to upgrade hard drive to SSD to speed up your computer.

  • Your C drive is running out of space and you need to replace C drive with a larger drive to get more capacity.

Then, how to upgrade C drive efficiently? Please read on.

Free disk cloning software for C drive replacement

Surely you can replace the current drive with a new drive directly and do clean installation of Windows. However, the whole process is time-consuming and you will need to reinstall all the applications and transfer important data from the old drive to the new drive before you can use your computer as usual.

To avoid system and application reinstallation and finish data transfer simultaneously, you need the best free disk cloning software—AOMEI Backupper Standard. You can benefit a lot from its powerful functions:

✦ It supports all Windows PC operating systems including Windows 11/10/8.1/8/7/Vista/XP.
✦ It offers the Disk Clone feature which enables you to transfer the operating system, applications and personal files from the old hard drive to a new HDD or SSD.
✦ It provides the Partition Clone feature. You are able to copy Ext4 partition using this feature.
✦ The cloning process will run in the background, so you can work on the computer during the process.

For more and more people choose SSDs as their main hard drives, I’ll show you how to change C drive with SSD using AOMEI Backupper in the coming part.

How to replace C drive with SSD in Windows efficiently

▶ Preparations:

● Connect the target SSD to your computer and make sure it is detected. It is recommended to connect the SSD internally if there is an extra SSD slot inside your computer.
Backup files on the destination SSD, because it will be overwritten during the cloning process.
● Download AOMEI Backupper using the download button below and install it.

Download Freeware Win 11/10/8.1/8/7/XP
Secure Download

▶ Detailed steps of replacing C drive in Windows 7/8/10/11:

Step 1. Run AOMEI Backupper. Click “Clone” on the left pane and select “Disk Clone”.

Disk Clone

Note: The Standard edition only supports cloning system disk from MBR to MBR. To clone system disk from MBR to GPT, GPT to MBR, or GPT to GPT, you may go to higher editions.

Step 2. Select the current system disk as the source disk and click “Next”.

Select Source Disk

Step 3. Select the destination SSD you have connected to your PC and click “Next”.

Select Destination Disk

Step 4. Tick “SSD Alignment” to improve the performance of the target SSD. Confirm the operation and click “Start Clone”.

Start Clone

Step 5. After the cloning process is finished, you can either change boot order in BIOS or replace the current drive with the target SSD to boot from the target drive.

✍ Notes:

  • If you are replacing C drive with a larger drive, you can click Edit Partitions > Add unused space to all partitions in Step 4 to extend partitions on the target drive automatically. You may upgrade to AOMEI Backupper Professional to make the option available.

Edit Partitions

  • If you are replacing C drive with a smaller SSD, you can clone only C partition and system-related partitions to the target drive using System Clone. The feature is offered in paid versions of AOMEI Backupper.

  • If you are cloning hard drives in different partition types (MBR to GPT or GPT to MBR), you should then change boot mode in BIOS to boot from the cloned drive.

  • Beside cloning C drive, you still can use it to clone hard drive to larger drive, clone Windows 10 to NVMe SSD, clone Intel SSD to another, copy data from one SSD to another, migrate Windows 10 to M.2 SSD, etc.


Either you want to replace C drive with an SSD or a larger HDD, AOMEI Backupper can meet your demands perfectly. And it applies to clone all kinds of HDDs and SSDs, even dynamic disk, such as, clone Windows 10 to new hard drive, transfer system image to new hard drive, clone NVMe SSD, etc.

Apart from the clone feature, AOMEI Backupper owns the functions of backup and restore. You can use it to create image backups for the system, disk, partition or even selective files, and you can restore them whenever it is needed. If you want to backup files in Windows Server 2019, you may try AOMEI Backupper Server. Go for this tool right now!