EaseUS Partition Master

A simple partition tool to manage disk space in Windows 10

How to Transfer OS to SSD Without Reinstalling Windows

Updated by Tracy King on Dec 11, 2020
Written by Brithny

Personal buyers and computer manufacturers are likely to choose SSD as a thinner, lighter, and faster alternative to HDD in recent years. Undoubtedly, SSD has become the trend of top-rank hard drive storage choices in 2019 and will be in the next few years. After investing some money in a new SSD, what are you going to do subsequently? Replace the old HDD with the new SSD, I guess. There is a way to transfer your Windows 7,8, or 10 installations to an SSD without reinstalling Windows. It's easier and more energy-efficient than fresh install OS, as long as your current operating system runs well and you don't need to install Windows OS on the SSD from scratch.

PreparationMake Everything Ready for Transferring OS to SSD

Most people are interested in finding a hard drive migration software to directly move OS from one hard drive to the other. It takes only a few steps but saves a great amount of time. Hence, if you're looking for a capable but easy-to-use OS migration software, think EaseUS Partition Master as a dependable and convenient choice. It can transfer OS from HDD/SSD to SSD without reinstalling Windows on your own.

Before we start officially, let's check some preparatory works. After getting ready with all the mentioned points, just begin right away with the procedure.

1. Connect or Install New SSD to PC

If you're using a desktop, you got many ways to connect a second solid-state drive to your computer.

  • Install the SSD alongside your old hard drive in the same machine.
  • Connect the SSD via a SATA-to-USB cable to your computer.
  • Use an external hard drive enclosure for a connection.

Normally, laptop users prefer to use the two latter ways.

2. Clean Useless Large Files on Hard Drive

SSD is generally smaller than HDD, it's a great idea to release some disk space or clear up some system junk files before migrating OS to a new hard drive. You can tidy up your current hard drive by using the EaseUS Tool M.

It's easy and light to cleaning computer junk files & large files with the following steps:

Step 1. DOWNLOAD and install EaseUS CleanGenius on your Windows computer. On the home screen, navigate to "Cleanup" and click "Scan" to start cleaning up the system and make your PC as good as new.

system cleanup step 1

Step 2. The software will start scanning all over your computer to find idle data files that take a huge amount of disk space, including useless large files, junk files and Windows invalid entries. This process won't take long.

system cleanup step 2

Step 3. When the scan is complete, you can choose unwanted files among the scan results, which are put in categories of Junk Cleanup, Registry Cleanup and Plug-in Cleanup. After the selection is done, click "Clean".

system cleanup step 3

3. Back Up C Drive Data

It's a wise option to back up C drive data before OS migration. We can't expect everything goes safe and sound all the time, but we can arm ourselves with a complete backup. 

A simple Ctrl C + V or Windows backup software can both work for C drive data backup.

4. Download OS Migration Tool

This is the key step. Simply click the download button here and it only takes a few seconds to download the OS migration tool - EaseUS Partition Master.

After this, you may move the next part and learn how to transfer OS from HDD to SSD

ProcedureHow to Migrate/Transfer OS from HDD to SSD

Three tips on using EaseUS Partition Master in the right way:

  • Select new SSD as the destination disk.
  • All data on the SSD will be erased while moving the OS from HDD to SSD.
  • The SSD can be smaller than the OS drive, but it must contain equal to or larger space than the used space in system C drive.

Now, let's have a look at how to migrate your Windows OS from HDD to SSD without reinstallation:

Note: The operation of migrating OS to SSD or HDD will delete and remove existing partitions and data on your target disk when there is not enough unallocated space on the target disk. If you saved important data there, back up them to an external hard drive in advance.

Step 1. Select "Migrate OS" from the top menu. Select the SSD or HDD as the destination disk and click "Next".

select migrate os

Step 2. Click "Continue" after check warning message. The data and partitions on the target disk will be deleted. Make sure that you've backed up important data in advance. If not, do it now.

select the destination disk

Step 3. Preview the layout of your target disk. You can also click the disk layout options to customize the layout of your target disk as you want. Then click "Proceed" to start migrating your OS to a new disk

preview the lay out

Besides, you can also use EaseUS Partition Master to resize/move partition on SSD.

EaseUS Partition Master supports clone a disk in the sector by sector and file by file disk level. You can also use it to clone and upgrade MBR or GPT disk.

Follow UpBoot PC on SSD after OS Migration

IMPORTANT: Once you complete the OS migration process, remember to set new SSD as the boot drive.

There are two ways to handle the SSD after the OS transfer.

1. Remove Old OS HDD, Use SSD as Boot Drive on PC

This is an easy case. After migrating OS from the old drive to the new, this time take out the HDD and leave the cloned SSD as the boot disk. 

2. Set SSD as Boot Drive

Most PC and laptops all contain two disk slots - one hard drive slot and one SSD slot. Therefore, you can choose to use the SSD as a boot drive on your computer. 

Step 1. Restart PC and press F2/F8 or Del to enter BIOS.

Step 2. Move to the Boot section, set the new SSD as the boot drive.

Step 3. Save the changes and restart PC.

Set PC to boot up from new SSD after moving OS to SSD

After this, your OS will automatically run from the new SSD and you'll experience a faster computer with better performance then.


On this page, we covered the whole process of how to migrate or transfer Windows OS from HDD to SSD without reinstalling Windows OS. EaseUS Partition Master with its Migrate OS to SSD feature makes everything easy for OS migration.

And don't forget to set the new SSD as the boot drive after moving OS. If you have further disk management needs, turn to EaseUS Partition Master for help. 

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Updated by Tracy King

Tracy joined in EaseUS in 2013 and has been working with EaseUS content team for over 7 years. Being enthusiastic in computing and technology, she writes tech how-to articles and share technical solutions about Windows & Mac data recovery, file/system backup and recovery, partition management and iOS/Android data recovery.

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Written by Brithny

Brithny is a technology enthusiast, aiming to make readers' tech life easy and enjoyable. She loves exploring new technologies and writing technical how-to tips. On her spare time, she loves sharing things about her favorite singer - Taylor Swift on her Facebook or Twitter.

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Product Reviews

TrustScore 4.7 | 49 reviews
  • I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes. I also think the overall look and feel of EaseUS Partition Master Free makes whatever you're doing with your computer's partitions easy.

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  • Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

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  • It won't hot image your drives or align them, but since it's coupled with a partition manager, it allows you do perform many tasks at once, instead of just cloning drives. You can move partitions around, resize them, defragment, and more, along with the other tools you'd expect from a cloning tool.

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About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.

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How to Partititon a Hard Drive on Windows 10/8/7

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