# How to Clone a Hard Drive to an SSD in Windows 11

URL: https://www.mytechnician.tech/tips/how-to-clone-hdd-to-ssd-windows-11/
Published: 2026-07-27 | Author: Ankit Kumar
Tags: Windows 11, Storage, Upgrade, Data Recovery, Hardware
Summary: Move Windows 11 to a new SSD without reinstalling. Prepare the drive, clone the whole disk, fix the boot order, and verify the result with this step-by-step guide.
Recommended app: RecoverPro — https://www.mytechnician.tech/apps/data-recovery-pro/ (Microsoft Store: https://apps.microsoft.com/detail/9MZ613NS5TNN?hl=en-us&cid=mytechnician-web). Optional; every step below uses built-in Windows tools.

## The Problem
Swapping a mechanical hard drive for an SSD is the biggest single speed upgrade an older PC can get. The obstacle is Windows itself — you either reinstall everything from scratch, or you **clone** the existing drive so the new SSD boots exactly as the old one did, with your programs, settings, and files intact.

Cloning is straightforward, but three things trip people up: the new drive being smaller than the used space on the old one, the PC still booting from the old drive afterwards, and the clone being made from a drive that was already failing.

> **Not sure which SSD to buy?** Read [how to choose an SSD for your PC](https://www.mytechnician.tech/tips/how-to-choose-an-ssd-for-your-pc/) first. **Old drive already showing errors?** Do **not** clone it — recover the files instead: [how to recover deleted files](https://www.mytechnician.tech/tips/how-to-recover-deleted-files-windows/).

## Symptoms
You are in the right guide if:

* Boot takes over a minute and the disk sits at 100 % in Task Manager.
* You have bought an SSD and do not want to reinstall Windows and every program.
* You need to move to a larger drive because the C: drive keeps filling up.

## Step 1: Check the Old Drive Is Healthy Enough to Clone
Cloning copies corruption faithfully. Check before you start.

1. Open **Terminal (Admin)** and run:
   ```
   wmic diskdrive get model,status
   ```
2. Check the file system:
   ```
   chkdsk C: /scan
   ```
3. Read the SMART attributes: [check SSD and hard drive health](https://www.mytechnician.tech/tips/check-ssd-hard-drive-health-windows-11/).
4. If SMART reports reallocated or pending sectors, do a **clean install** on the new SSD and copy your files across manually instead — [how to clean install Windows 11](https://www.mytechnician.tech/tips/how-to-clean-install-windows-11/).
5. Either way, make a backup first: [set up automatic backups](https://www.mytechnician.tech/tips/set-up-automatic-backups/).

## Step 2: Make the Used Space Fit the New Drive
Most cloning software refuses to shrink an image below the used space on the source.

1. Open **Settings** → **System** → **Storage** and read the used space on C:.
2. If it is larger than the new SSD, clear space: [free up disk space when the C: drive is full](https://www.mytechnician.tech/tips/free-up-disk-space-c-drive-full-windows-11/) and [clean junk files](https://www.mytechnician.tech/tips/clean-junk-files-optimize-pc/).
3. Move large personal folders (Videos, Photos, game libraries) to an external drive temporarily — they can come back afterwards.
4. Aim to leave the used data at no more than about **80 %** of the new SSD's capacity.

## Step 3: Connect the New SSD
1. **Desktop, 2.5-inch SATA SSD** — connect a SATA data cable to the motherboard and a SATA power lead from the PSU. It can sit loose during the clone; mount it properly afterwards.
2. **Desktop, M.2 NVMe** — power off, unplug, insert the module at roughly 30° into the M.2 slot, press flat, and secure the screw or latch. Check the manual: some boards disable SATA ports when certain M.2 slots are populated.
3. **Laptop** — you usually cannot fit both drives at once. Use a **USB-to-SATA adapter** or an **NVMe USB enclosure** to attach the new drive externally, clone to it, then swap the drives over.
4. Power on and confirm Windows sees it: **Windows + R** → `diskmgmt.msc`. A brand-new drive appears as **Unallocated** and may prompt to initialise — choose **GPT** if asked.

## Step 4: Pick and Run the Cloning Software
Windows has no built-in disk cloning tool, so use one of these:

* The **SSD manufacturer's own tool** — Samsung Data Migration, Crucial Storage Executive (Acronis), WD/SanDisk Dashboard, Kingston Migration. Free with the drive and the safest first choice.
* **Macrium Reflect** or **Clonezilla** for a vendor-neutral option.

Then:

1. Close everything else and disable sleep during the clone: **Settings** → **System** → **Power & battery** → set **Screen and sleep** to **Never** while plugged in.
2. Choose **Clone this disk** / **Disk clone** — not "partition clone". You need every partition, including **EFI System**, **Recovery**, and **MSR**, or the SSD will not boot.
3. Select the old drive as **source** and the new SSD as **destination**. Check this twice: the destination is erased completely.
4. If offered, tick **Optimise for SSD** or **SSD alignment**.
5. Start the clone and leave the PC alone. Expect roughly 20-60 minutes for a typical 250-500 GB source; a full mechanical drive can take several hours.

## Step 5: Boot from the SSD
1. Shut down fully.
2. **Desktop:** disconnect the old drive's data cable for the first boot. This removes any ambiguity about which disk booted.
   **Laptop:** physically swap the new SSD into the internal bay.
3. Power on and enter firmware setup: [how to enter BIOS or UEFI](https://www.mytechnician.tech/tips/how-to-enter-bios-uefi-windows-11/).
4. On the **Boot** tab, set **Windows Boot Manager** on the new SSD as **Boot Option #1**, then press **F10** to save and exit.
5. Windows should start normally and noticeably faster. If it does not: [fix no bootable device](https://www.mytechnician.tech/tips/fix-no-bootable-device-windows-11/) and [fix INACCESSIBLE_BOOT_DEVICE](https://www.mytechnician.tech/tips/fix-inaccessible-boot-device-windows-11/).

## Step 6: Extend the Partition to Use the Whole SSD
Cloning to a larger drive often leaves the extra space unallocated.

1. **Windows + R** → `diskmgmt.msc`.
2. Right-click the **C:** partition on the SSD → **Extend Volume** → follow the wizard to take all unallocated space.
3. If **Extend Volume** is greyed out, a Recovery partition sits between C: and the free space. Cloning tools usually offer to resize during the clone; otherwise use the tool's own partition manager.
4. Manual partition work: [partition and format a hard drive](https://www.mytechnician.tech/tips/partition-format-hard-drive-windows-11/).

## Step 7: Verify the SSD Is Configured Correctly
1. Confirm TRIM is on — in **Terminal (Admin)**:
   ```
   fsutil behavior query DisableDeleteNotify
   ```
   `DisableDeleteNotify = 0` means TRIM is enabled. If it returns 1, enable it:
   ```
   fsutil behavior set DisableDeleteNotify 0
   ```
2. Open **Defragment and Optimize Drives** from the Start menu. The SSD should be listed as **Solid state drive** with **Optimize** meaning TRIM, not defragmentation. Leave the weekly schedule on.
3. Check the drive is running at full speed: [fix slow SSD speeds](https://www.mytechnician.tech/tips/fix-slow-ssd-speeds-windows-11/).
4. Confirm activation survived the swap: [activate Windows 11 and fix activation errors](https://www.mytechnician.tech/tips/activate-windows-11-fix-activation-errors/).

## Step 8: Repurpose the Old Drive
1. Once you have used the SSD for a week and are confident everything works, reconnect the old drive.
2. **Windows + R** → `diskmgmt.msc`, delete its partitions, and create one new volume for storage or backups.
3. If you are selling or giving the machine away instead, erase it properly: [wipe a PC before selling or donating it](https://www.mytechnician.tech/tips/wipe-pc-before-selling-donating/).

## What Not to Do
* **Don't clone onto a drive holding data you need.** The destination is wiped without a second chance.
* **Don't clone a drive with SMART warnings.** You copy the damage and waste the new SSD.
* **Don't leave both drives connected long-term with two copies of Windows.** Boot entries get confused and Windows may repair the wrong disk.
* **Don't defragment an SSD.** Let Windows run TRIM on schedule instead.

## Still Not Working?
If the SSD will not boot, put the old drive back — it is untouched — and try the clone again with the destination fully wiped first (`diskpart` → `select disk N` → `clean`). Confirm the source disk is **GPT** and the firmware is in **UEFI** mode; cloning a GPT disk onto a system booting in legacy CSM mode is the usual reason a perfect clone will not start.

Related: [best PC upgrades to speed up an old computer](https://www.mytechnician.tech/tips/best-pc-upgrades-to-speed-up-an-old-computer/) and [transfer files from an old PC to a new PC](https://www.mytechnician.tech/tips/transfer-files-from-old-pc-to-new-pc/).

---
Source: https://www.mytechnician.tech/tips/how-to-clone-hdd-to-ssd-windows-11/ — My Technician, free Windows 10/11 troubleshooting guides.
Related tool: RecoverPro (Windows data recovery software to recover deleted files, restore formatted drives, and rescue data from corrupted partitions on Windows 10 and 11.) — https://www.mytechnician.tech/apps/data-recovery-pro/
More guides: https://www.mytechnician.tech/llms.txt