Replacing a hard drive gets complicated when you need to move Windows, its boot partitions, and your files together. The right cloning method copies the content you need to another HDD or SSD, overwriting the destination. Start by identifying both drives, then use the Windows, Mac, or bootable USB method that fits your replacement.
Get the source and destination right
Copying only the main Windows partition leaves boot and recovery partitions out of your replacement-drive clone.
Choose whole-disk cloning to copy the disk's partitions, or system cloning to migrate Windows and its related partitions. A partition-only copy does not guarantee a bootable replacement. Image-and-restore saves the disk to an image first, then writes that image to the replacement later.
Identify the source, the drive you are copying from, by its model, capacity, and identifier. Then identify the destination, the drive receiving the copy, using those same details. Save any destination files you need to separate storage before proceeding. Cloning overwrites destination contents.
Check the destination's capacity against your chosen tool's requirements. Clonezilla's ordinary beginner workflow expects a destination at least as large as the source. A smaller replacement requires a tool and filesystem configuration that support resizing; enough space for your files alone does not satisfy every cloning method.
Test the replacement before erasing the original. A completed data copy does not establish that the replacement can start your computer, especially on modern Macs.
Clone a Windows drive with Hasleo Disk Clone
Download the appropriate edition from Hasleo's product page. Free covers personal use on supported x86/x64 Windows Home and Pro editions.
Open Hasleo Disk Clone. Choose Disk Clone for the whole drive, or System Clone for Windows and its related partitions. System cloning identifies the Windows-related partitions automatically.
Select the source disk if you chose Disk Clone, then click Next. With System Clone, click Next after Hasleo selects the Windows partitions. Next, select the destination disk and click Next to reach the layout settings. Adjust the destination layout.
Select Proceed after checking the destination's model, capacity, and identifier. Confirm the operation with Yes.
Choose Pro if you need emergency boot-media creation or delta cloning; neither feature is included in Free.
Migrate Windows to a Samsung SSD
Samsung Magician provides a Windows migration route when the destination is a supported Samsung SSD. It migrates the Windows C: volume plus up to two additional volumes you select, and copies the System Reserved partition automatically. It does not copy a manufacturer's factory OEM recovery partition, except on Samsung computers with Samsung Recovery Solution 5, 6, or 7. If you need every partition, use a whole-disk cloning method instead.
Check your destination SSD against the supported-drive list on Samsung's tools page. Download the current Samsung Magician package from that page. The standalone Data Migration utility is now integrated into Magician, so older instructions to install a separate migration app describe the previous packaging.
Open Data Migration in Magician. Select the drive containing Windows as the source. Choose the supported Samsung SSD as the destination.
Select the source volumes to migrate: C: plus up to two more. Click Start after checking the source and destination selections.
Use Macrium Reflect X for a full Windows clone
Macrium Reflect X copies an entire Windows disk, with partition resizing on supported filesystems.
Open your licensed Reflect X installation. Go to Create Backups > Local Disks. Select the source disk. Click Clone this disk....
Choose the destination disk. Copy the required partitions into the destination layout, including boot and recovery partitions when replacing a Windows system disk. Adjust the partition sizes to suit the destination. Advance through the wizard to its final review.
Select Finish. Choose to run the operation immediately. Confirm that the selected destination can be overwritten.
Copy a Mac volume with Disk Utility
Open Disk Utility for a volume-to-volume copy. Its restore feature erases the destination volume and does not guarantee a bootable clone of an entire modern Mac startup disk.
Select View > Show All Devices. Choose the destination volume, the one receiving the copy. This workflow starts with the destination, so check your selection carefully.
Click Restore. Choose the source volume in the restore menu. Click Restore to begin copying. Select Done when the operation finishes.
For an ongoing copy of your Mac's data, Carbon Copy Cloner 7 updates an existing copy on subsequent runs; its standard data backup is separate from a bootable system copy.
Run an offline clone with Clonezilla
Clonezilla Live copies supported Windows, Linux, and other filesystems outside the installed operating system, with an equal-size or larger destination required for its ordinary beginner workflow.
- 1.Download a current stable build compatible with your computer's architecture and firmware from Clonezilla's download page, then create bootable media using the project's instructions.
- 2.Boot from that media and choose your language and keyboard settings.
- 3.Select Start Clonezilla > device-device > Beginner > disk_to_local_disk.
- 4.Select the source disk, then the destination. Check each drive's model, capacity, and identifier against your intended selections.
- 5.Choose the filesystem-check and partition-layout options presented by the wizard.
- 6.Accept the final overwrite confirmations after checking the destination selection.
Save an image when both drives cannot connect together
Use image-and-restore when you cannot connect the original and replacement simultaneously. Clonezilla saves the complete source disk to an image on separate storage, then restores it after you install the replacement.
Boot Clonezilla. Choose device-image. Select local_dev for directly attached image storage. Choose the separate storage location that will hold the image.
Use savedisk to save the complete source disk. Install the replacement drive after the image has been saved. Reconnect the storage containing the image. Boot Clonezilla again.
Select Start Clonezilla > device-image > local_dev, and choose the storage holding the image. Use restoredisk to write the saved image to the replacement, checking the destination before confirming. Test the replacement before erasing the original drive.
Frequently Asked Questions
Which cloning option supports a smaller SSD?
DiskGenius supports a smaller destination with its Copy all files method, as long as the destination is at least as large as the used space on the source. When the target is smaller, that is the only method offered. Partitions with file systems DiskGenius does not support are automatically cloned with Copy all sectors, which needs a destination at least as large as the source. Its sector-copy modes have stricter capacity requirements, so select the copying mode that supports your destination.
Is Windows System Image Backup a built-in cloning tool?
It is a two-stage image-and-restore component, not a direct disk-cloning tool. Microsoft has deprecated System Image Backup, also called Backup and Restore (Windows 7), and recommends another vendor's full-disk backup product.
Can I repeat a clone without setting it up again?
Yes. In Macrium Reflect X, configure the clone and select Schedule this Clone > Add Schedule. Set the frequency and save the backup definition when completing the wizard. The saved definition also supports repeat runs without rebuilding the disk selection. The destination must be available when the job runs.
Does Acronis make a bootable Mac copy in one cloning operation?
The process depends on the Mac. Acronis True Image 2026 lets supported Intel Macs test an external startup copy by holding Option at startup. Apple silicon requires an additional reinstall-and-migration process; Acronis documents that procedure for M1–M4 models.