To transfer Windows to another drive while keeping your apps, files, and settings, clone the entire system disk to the replacement, then boot your PC from it. Include the boot and system partitions as well as C: so the replacement can start Windows independently. If you cannot connect both drives at once, create a system backup on separate storage and restore it to the replacement.
You can also install Windows fresh, then restore your files and reinstall your applications. Back up anything important before starting, including files already on the destination, and keep the original drive until the replacement boots independently.
The short version
- Keep your setup: Clone the system disk, including its boot and system partitions.
- One drive slot: Create a system image on separate storage and prepare emergency media before replacing the original drive.
- Protect your files: Back up anything you need from the destination because cloning or restoring can overwrite it.
- Finish the move: Confirm that the replacement boots independently before erasing the original drive.
| Method | What carries over | When to choose it |
|---|---|---|
| Direct disk cloning | Windows, apps, and files on copied partitions | You can connect both drives together |
| System image and restore | Windows and contents included in the backup | You need intermediate storage between drives |
| Clean installation | Files you restore separately | You want a fresh Windows setup |
| Windows Recovery Drive | System recovery without personal files | You can prepare recovery media on the original PC |
Prepare your drives and recovery information
Back up your personal files to storage separate from the destination drive. Anything already on the destination also needs a backup, since cloning or restoration can overwrite it. Identify the disk containing your current Windows installation and the disk that will receive the copy before approving an overwrite.
Decide whether you need the entire original disk or only the partitions Windows requires. System-only migration can leave applications and data stored on other partitions behind. Choose whole-disk cloning when those additional partitions need to move with Windows.
If your PC uses BitLocker or device encryption, locate your recovery key before changing drives or boot settings. Those changes can trigger a recovery prompt requiring the matching 48-digit key. Check the Microsoft account holding the key, a printed copy, or a saved USB text file.
Check your chosen tool's Windows, processor, and drive requirements before installing it. Windows x64 support does not establish Arm compatibility, and a free installer does not necessarily let you clone the system disk. Make sure the edition you obtain includes the migration feature you need.
Clone the system disk with Macrium Reflect
Macrium Reflect X can copy your existing Windows installation directly to another drive. Get a supported edition or applicable trial from the Macrium Reflect X Home product page, then connect the replacement drive. Macrium no longer maintains Reflect Free, so use its current supported product for this route.
Open Create Backups > Local Disks, select the source disk, and choose Clone this disk.... Select Select a disk to clone to... and choose the replacement drive. Drag all required partitions to the destination or select Copy Partitions, including the boot and system partitions as well as C:.
Advance through the scheduling options and review the summary. Select Finish, then select Run this backup now and start the operation.
At Confirm Overwrite, check All target volume data will be overwritten. Confirm to proceed. only after confirming that the destination contains nothing you need, then select Continue....
When cloning finishes, shut down and boot from the replacement drive. Leave the original intact until the replacement starts independently. If it does not start, check the boot selection and copied partitions using the fixes below.
Use a system image when both drives cannot connect
A system image lets you move Windows through intermediate storage without connecting both drives together. Hasleo Backup Suite supports this backup and restoration route in its Free edition. Direct system-disk cloning requires Home or higher, so check which feature you are choosing.
Download the package matching your processor from the Hasleo Backup Suite download page. While the original drive is still installed, select Backup > System Backup and save the image on separate storage. Before removing the original drive, select Tools > Emergency Disk to prepare emergency media.
Install the replacement drive and boot the emergency media to restore the saved image. Select Restore > Browse image to restore, locate the backup, choose the backup version, and select Next. Choose System mode, select the replacement disk, and select Next again.
Adjust the destination layout, select Proceed, and select Yes at the overwrite warning after checking the selected disk. Once restoration finishes, restart into the destination installation. Microsoft has deprecated its older built-in System Image Backup solution and recommends third-party full-disk backup software instead.
Install Windows fresh on the replacement
Choose a clean installation when you want a fresh system and can reinstall your applications. Back up your files first and choose the Windows edition matching your license. The installation image must also match your PC's processor architecture.
For an x64 PC, open Microsoft's Windows 11 download page and select Download Now under Create Windows 11 Installation Media. Run the tool as administrator, select Accept, then choose Create installation media for another PC. Select Next, choose the language and edition, and select USB flash drive to create installation media.
The Media Creation Tool does not create Arm installation media. For an Arm PC, use Microsoft's Windows 11 Arm64 ISO and follow your device manufacturer's installation-media and driver requirements. Your model may require specific drivers or recovery media.
Shut down and install the replacement drive before booting the Windows installation media. Disconnecting the original drive helps prevent selecting it accidentally. Complete Select language settings and Select keyboard settings, then select Install Windows 11.
Select I agree everything will be deleted including files, apps, and settings, then select Next. If prompted for a key, select I don't have a product key, choose the edition matching your license, then select Accept. At Select location to install Windows 11, choose the replacement drive's unallocated space, select Next, and select Install.
After installation, restore your backed-up files and reinstall your applications. Keep the original drive until the replacement starts independently and your needed files are available.
Reinstall with a Windows Recovery Drive
You can use a Windows Recovery Drive to reinstall Windows after replacing the system drive, provided you create it beforehand. It excludes personal files, so back those up separately. The recovery media is intended for the device on which you created it.
Search Start for Recovery Drive and open it. Check Back up system files to the recovery drive, select Next, then connect and select an empty USB drive. Select Next, then Create.
After replacing the system drive, boot from that USB and select Recover from a drive. Choose Just remove my files or Fully clean the drive, then select Recover. Restore your personal files separately when recovery is complete.
Boot from the transferred Windows installation
Once copying or restoration finishes, shut down and install the replacement in its intended internal position. Start the PC from the replacement rather than assuming it has become the default boot drive. Keep the original disconnected while confirming that the replacement can start independently.
To reach firmware settings from Windows 11, open Settings > System > Recovery and select Restart now under Advanced startup. In the recovery environment, select Troubleshoot > Advanced options > UEFI Firmware Settings and restart into firmware. You can then change the boot order to select the replacement drive.
Hardware boot keys and firmware menus depend on your computer model; follow the steps to get to BIOS on a Windows PC to reach those controls. When Windows cannot start, you can also boot installation media and select Repair my PC to enter the recovery environment.
Fix boot and BitLocker problems
If the replacement does not boot, first confirm that your PC is selecting it. Next, check that the migration included the boot and system partitions as well as the Windows partition. If those partitions are missing, repeat the clone with them included.
For a BitLocker recovery prompt, record the recovery key ID and match it to your saved key before entering its 48 digits. If your migration tool or hardware procedure requires suspension before you proceed, open Control Panel > System and Security > BitLocker Drive Encryption and select Suspend protection, then Yes. Suspension does not decrypt the drive.
After completing the migration-related changes, return to the same BitLocker controls and select Resume protection, then Yes. Keep your recovery key accessible, and leave the original drive intact until the replacement boots successfully.
Check activation before retiring the old drive
Open Settings > System > Activation to check Windows activation. Keep the same licensed edition during the move. Replacing a drive does not give you the right to transfer an OEM license to a different PC.
If a significant hardware change causes deactivation, open Troubleshoot and select I changed hardware on this device recently. Select Next, sign in with the linked Microsoft account, select This is the device I’m using right now, and select Activate. Alternatively, enter a valid product key through the activation settings.
Before retiring the old drive, confirm that Windows starts independently from the replacement and that your needed applications and files are present. Check anything previously stored on additional partitions that a system-only migration could have omitted. Keep the original until those checks are complete.
Frequently Asked Questions
Can Windows Backup transfer Windows itself to another drive?
Windows Backup's PC-to-PC transfer excludes operating-system files, system files, and installed applications. Changing where new content is saved also changes content destinations without moving Windows.
Can you move Windows to a smaller SSD?
You can use a migration tool that supports a smaller destination when it has enough space for the migrated data, such as DiskGenius. Support varies by tool: Rescuezilla requires a source-partition-resizing workaround for smaller-disk migration.
Can you run the transferred Windows installation from an external drive?
You can use supported third-party portable-Windows software such as WinToUSB Professional or Enterprise. Its Free edition excludes cloning your current Windows installation. Microsoft removed the native Windows To Go creator in Windows 10 version 2004.
Does Samsung provide a tool for moving Windows to its SSDs?
You can use Data Migration in current Samsung Magician to transfer Windows, applications, and files to an eligible Samsung SSD. Feature availability depends on the model, so check eligibility before choosing it for a Samsung OEM drive or a non-Samsung destination.
Can you clone Windows without installing software on the PC?
You can boot Clonezilla Live or Rescuezilla from USB to clone drives outside Windows. A compatible standalone hardware duplicator is another option, but its drive-interface and capacity requirements depend on the model.