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[Tested & Effective] Delete All Partitions on Windows 10/8/7 PC at One Time

Updated on Dec 04, 2018 by Tracy King to Partition Manager

Summary:
Delete all partitions on Windows computer at one time may be a challenge for some people. Follow this page, you'll learn how to delete all partitions even including the OS on system disk or the second hard drive at one time in Windows 10/8/7. See how to thoroughly clean Windows computer hard drive with OS by using EaseUS Partition Master, Disk Management and CMD on your own.
PAGE CONTENT:
How to delete all partitions with OS in Windows 10/8/7
How to delete all partitions on a second HDD/SSD in Windows 10/8/7
Delete all partitions at one time with partition manager
Delete all partitions with Disk Management
Delete all partitions with Disk Cleanup command line

Can I delete all partitions in Windows 10/8/7?

"Can anyone tell me if it's possible to delete all partitions on a Windows PC? I want to fully clean and remove all partitions on my Windows 10 computer and Windows 7 laptop to reinstall Windows OS.
I’m having a trouble to clear the system partition from my computer. So is it possible to delete all partitions even including the system partition in Windows 10/8/7? How?
"

Are you looking for a simple guide to help you delete or clean all partitions on your Windows PC to make use of all space on the computer HDD or SSD? 
Here on this page, you’ll see a simple way with powerful partition manager software to help delete all partitions at one time on Windows PC HDD/SSD: 

Tip
If you have important data saved on the computer hard drive or SSD in Windows 10/8/7, please backup and extract all data to an external hard drive in advance.

Just follow to see how can you delete all partitions altogether with ease now:

How to delete all partitions with OS in Windows 10/8/7?
EaseUS partition master with bootable disk will do!

As we all know that Windows system doesn’t allow users to fully delete all partitions including the system partition to ensure users can run the computer with a smooth experience. But if you are trying to reinstall a new Windows operating system like Windows 10 on your PC and re-manage your computer space, you’ll need to delete all Windows hard drive partitions together with the OS. 

To save your time and energy, the best way for doing this job is to delete all partitions with OS on Windows PC at one time. And powerful EaseUS partition manager software - EaseUS Partition Master with bootable disk will do and help:

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 Windows 10 is supported

You can directly install on your PC and follow the tips below to see how to remove all partitions and clear your Windows 10/8/7 disk partitions at one time with the OS right now:

 

Step 1: Prepare a disc or drive

To create a bootable disk of EaseUS Partition Master, you should prepare a storage media, like a USB drive, flash drive or a CD/DVD disc. Correctly connect the drive to your computer.

Launch EaseUS Partition Master, go to the "WinPE Creator" feature on the top. Click on it.

create easeus partition master bootable disk

Step 2: Create EaseUS Partition Master bootable drive

You can choose the USB or CD/DVD when the drive is available. If you do not have a storage device at hand, you can also save the ISO file to a local drive, and later burn it to a storage media. Once made the option, click "Proceed".

create easeus partition master bootable disk

You have created an EaseUS Partition Master WinPE bootable disk. Now, you can restart computer and boot through the bootable drive, then manage your hard disks and delete all partitions including the OS partition.

Step 3: Wait and enter EaseUS Partition Master interface

Here you can right-click on the system disk and select "Delete all".

Start PC and enter into EaseUS Partition Master, select to delete all partitions.

Step 4: Click "OK" to confirm that you want to delete all partitions on the selected disk drive even including the Windows OS.

Confirm to delete all partitions with OS.

Step 5: Click "Execute Operation" and "Apply" to keep all changes on your computer.

Keep all changes on Windows PC.

After this, you’ll not be able to run your computer into Windows OS anymore. You can refer to clean install Windows 10 as a guide if you’d like to reinstall Windows 10 on your PC.

How to Delete All Partitions on A Second HDD/SSD in Windows 10/8/7?

And if you are looking for an easy way to delete all partitions on the second hard drive or SSD in Windows 10, 8 or 7, you’ll have three methods to try and remove all partitions on your own.

Notice:
If you prefer an effective and 100% working trick, EaseUS partition manager software - EaseUS Partition Master in Method 1 will help.
If you need a free guide, Method 2 with disk management tool and Method 3 with diskpart command lines can be your choices.

Method 1. Delete all partitions at one time with partition manager software

EaseUS partition manager software allows you to just delete all partitions at one time on a hard disk or SSD within 3 simple steps. 

All you need is to install it on your PC and activate it into a full version so to gain a smooth partition deleting process with below guidelines:

 

Step 1: Run and enter EaseUS Partition Master interface. Here you can right-click on the HDD or SSD disk and select "Delete All".

select delete all

Step 2: Click "OK" to make sure that you want to delete all partitions on the selected disk.

select the disk

Step 3: Keep all changes on your computer.

By clicking "OK" you will add a pending operation of all-partitions deletion. Click "Execute Operation" and "Apply" to delete all partitions.

delete all partitions by clicking Apply

After this, you’ll get an empty second hard disk or SSD on your PC, and you can create partitions on the disk to make full use of the space by them.

Method 2. Delete all partitions with Disk Management

If you prefer a free tool for help, Windows Disk Management tool can help you delete all partitions on the second HDD/SSD one by one:

1. Open Disk Management on Windows computer by right-clicking This PC or My Computer and select "Manage".
2.Right-click on the second hard drive or SSD partition and select "Delete Volume".

Delete partitions with Disk Management.

3. Repeat the steps again and again until you’ve deleted all partitions on the second HDD/SSD in Windows 10/8/7 PC.

Method 3. Delete all partitions with Disk Cleanup command line

1. Right-click Start button and select Command Prompt.
2.  Type: diskpart in Command Prompt and hit Enter.

Open DiskPart to remove partitions on second HDD/SSD.

3.Type: list disk and hit Enter.

List disk to delete all partitions.

4. Type: select disk 2 and hit Enter. (Replace 2 with the disk number of your second HDD/SSD.)

Select second disk to clean up so to remove and delete all partitions.

5. Type: clean and hit Enter.

Confirm to delete all partitions on second HDD/SSD.

6. Type: exit to finish the whole process.

After this, you’ll get all partitions removed on your second hard disk and you can re-partition your second hard drive again by creating new partitions.