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2-Step Troubleshooting for Installed Windows 10 on A Wrong Hard Drive

Posted on Jul 04, 2018 by Jean to Partition Manager

Accidentally installed Windows 10 on a wrong hard drive! Take it easy. You can change the Windows 10 installation to the correct drive and delete the system on that wrong drive by following this easy guide.

I installed Windows 10 on a wrong drive

"My computer has two hard drives and a solid state drive. Windows 8.1 was on the SSD but when I upgraded to Windows 10 it installed to one of the hard drives and not the SSD. How can I move the installation to the SSD?"

No matter which way you choose to install Windows 10, i.e., clean install and in-house upgrade, you'll be asked to choose a location for the whole system installation, and it's quite normal for us to choose the wrong drive when there are multiple hard drives on your computer. How to move Windows 10 from the wrong drive to the correct one then?

We Provide You with A Two-step Troubleshooting

But before you start, read the below tips to fully understand the goal of each step.

No.1. If you wish to keep the OS on the wrong drive after OS migration, finishing the first step is enough.
But if you don't need to keep a dual boot on two separate hard drives, continue performing the second step to remove the system completely on the wrong drive and simply use it as a data storage drive.
No.2 Important! Both steps for OS migration and OS deletion will erase data on the hard drive. If the data amount for backup is too huge, use third-party free backup software for a fast backup.

Step One# Migrate OS with EaseUS Partition Master

EaseUS Partition Master is beautifully designed with a powerful feature called "Migrate OS to HDD/SSD", which makes it a specialized OS migration tool that happens to easily solve the problem of installing Windows 10 on a wrong hard drive. All you need to know is that this partition magic software is able to clone the entire operating system installation from the wrong drive to the correct destination drive.

First| Boot Windows 10 from the wrong hard drive

Yes, just boot your computer in the first place. 
If the mistake was made by means of upgrading to Windows 10 from Windows 7/8/8.1, you should change the boot order in BIOS. Generally, continuously hold and press F2 while starting the computer and you will boot in the BIOS interface. Let your computer boot from the wrong hard drive where Windows 10 is installed.

Right after you boot Windows 10 successfully, download and install EaseUS Partition Master on your computer.

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 Windows 10 is supported

Second| Migrate Windows 10 from the wrong drive to the correct drive

Now it's time to take the major step. Let's assume that the hard disk 1 represents the wrong drive and the hard disk 2 is for the new system drive you want to switch to. The below operation is going to teach you how to migrate OS from hard disk 1 to hard disk 2. All right, begin.

1_Run EaseUS Partition Master, select Wizard -> Migrate OS to SSD/HDD from the main menu. 

The currently running Windows 10 operating system (on hard disk 1) has been chosen by the software by default.

2_Select the hard disk 2 as the destination disk and click Next.

choose Migrate OS to SSD

3_Click Yes to allow the program to delete partitions on the destination disk, then click Next to continue.  

delete all partitions on ssd

* If there are some partitions on the destination disk, please confirm to delete all partitions and data on the destination disk. The migration process cannot finish if you don't allow EaseUS Partition Master to delete all the partitions on the destination hard disk or click Back to choose another destination hard disk.

4_Resize partitions on the destination disk. Position the mouse pointer on the left or right partition handle. The mouse pointer changes to a double-headed arrow and drags the handle to the partition size you want. Click OK.

resize ssd partition

5_ To preview the result on the left panel Pending Operations. If it's alright, then click Apply. Tick Shut down the computer after changes are applied option.

Third| Boot Windows 10 from the new hard drive

Use the same way to start your computer, and this time choose to boot from the new drive (hard disk 2 in the example). That's how super easy it is to rectify the problem of mistakenly installing Windows 10 on a wrong hard drive without doing a fresh install!

Reading recommendation: Migrate OS to SSD or fresh install?

Step Two# Delete OS on the wrong drive with EaseUS Partition Master

To be continued...

Here, one big issue is concerned after the complete OS migration. You don't delete the previous OS on the wrong hard drive, which means now you got two hard drives and both contain the operating system.

Windows doesn't allow users to delete operating system directly. To convert a system disk to a simple disk for only data storage, you have to delete the OS off from it. On this regard, go on with EaseUS Partition Master because it offers an easy way to remove system on a second hard drive!

First| Boot your computer from the new drive

We mean the hard disk 2 in the example. This is very important! You must confirm that your computer is running the operating system on the new hard drive, which means that you changed the boot priority to the hard disk 2 as we illustrated in the Third step in Step One.

Second| Remove system partition with EaseUS Partition Master

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 Windows 10 is supported

Now launch EaseUS Partition Master on the "new" Windows 10 system, you will see two hard drives in the drive list.

1_Right-click the system partition on the wrong drive and choose "Delete partition".

right-click the wrong drive system partition and choose delete partition

2_When a prompt message appears, click "OK".

click ok to delete windows 10 on the wrong hard drive

Done. No system is left on the hard drive which you wrongly chose it as the Windows 10 installation hard disk.