[How To] Create New Disk Partition In Windows 10

This post will show how to assign a drive letter to separated or 'Unallocated' volume and create new disk partition in Windows 10 from it.

Kapil Arya
11x Microsoft MVP · Admin
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Recently, we’ve seen how to split and merge disk volumes in Windows 10 in this article:

How to split and merge disk volumes in Windows 10

In this post, we’ll see how to assign a drive letter and turn separated volume into disk partition to further use it as different drive. Then with this disk partition, you’ll be able to use it for installing another operating system (OS) and converting your system into multiple OS installation. As mentioned in above linked article, users may also use this drive for keeping less priority files or other stuff.

So here is the how-to part:

How To Create New Disk Partition In Windows 10/8.1/8/7

1. Press W8K + R to open Run and type diskmgmt.msc in it to open Disk Management. Click OK or press Enter.

Disk Management In Windows 10

2. In the Disk Management window, right click on Unallocated labelled volume and select New Simple Volume.

How To Create New Disk Partition In Windows 10

3. Moving on, click Next in following window:

How To Create New Disk Partition In Windows 10

4. Then specify the volume you want to keep for drive partition. If you want to convert all Unallocated volume to drive partition, enter the same Simple volume size equals to Maximum disk space. Click Next.

How To Create New Disk Partition In Windows 10

5. On next screen, you can assign a drive letter such as E, F and so on to call drive as E: drive, F: drive respectively. Click Next.

How To Create New Disk Partition In Windows 10

6. Now on next screen of the wizard, type the new for drive. If your plan is to install new OS on this drive, make sure Enable file and folder compression is unchecked, else you’ll face Windows can’t be installed because This PC uses a compressed operating system error while installing Windows. Click Next.

How To Create New Disk Partition In Windows 10

7. Click Finish to complete the wizard.

How To Create New Disk Partition In Windows 10

You can spot the drive so created in Disk Management window.

How To Create New Disk Partition In Windows 10

So in this way, you new drive is ready to use. You can select storage settings for it under Settings app > System > Storage.

How To Create New Disk Partition In Windows 10

That’s it!

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Kapil Arya
11x Microsoft MVP · Admin

Kapil holds Microsoft MVP title in Windows IT Pro expertise, 11-times in a row (2014-2025). He is 8-times Windows Insider MVP as well, and author of 'Windows Group Policy Troubleshooting' book. In 2015, Microsoft India accomplished him as 'Windows 10 Champion'. Being passionate Windows blogger, he loves to help others on fixing their system issues. Kapil has worked with official Microsoft Community Engagement Team (CET) on several community projects. You can subscribe him for news/updates and fixes for Windows.

3 Comments
Brian H Vogel

how do i resize the c: drive because it does not need to be that large and i would like to install windows 7 home premium in the new partition.

Brian H Vogel

the reason i want to reduce the size of my C: dive is that windows 7 needs more than 6.68 gb to be installed.

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