How to Solve the “We Couldn’t Create a New Partition” Issue in Windows PC

Installing Windows 10 on your PC or laptop is very easy and simple. All you need to do is to download Windows 10 ISO, create a bootable USB drive, insert it and follow the wizard on the screen. During the installation, Windows 10 will ask you to select a partition. Usually, you just select the desired partition or hard drive from the list and Windows does the rest of the work.

However, several users have reported a “Failed to create new partition” error when creating a new partition during Windows 10 installation. And this error is preventing them from installing Windows 10.

What causes the “we couldn’t create a new partition” error message in Windows 10?

  • One of the most common causes of partition errors is interference from other connected devices.
  • Sometimes the “Failed to create new partition” error can be caused by an incorrectly created Windows bootable device.
  • Usually, when you install Windows, a USB drive or CD-ROM is used as the first boot device. However, sometimes this causes Windows to confuse the USB drive or CD with the hard disk, resulting in the “Failed to create a new partition” error.

How to resolve the “Failed to create a new partition” problem in Windows 10?

Activate the partition

  1. Open the disk list.
  2. Find the drive and enter “Select Drive 0” or any other number you like. This new number will be the number of your hard drive.
  3. Open the partition list.
  4. Identify the partition you want to install in the list and click on it.
  5. Replace “number 1” with your partition number.
  6. Enter “active.”
  7. Type exit and enter to exit the command line.

Converting a partition to GPT format

  1. Run the command line and open Diskpart.
  2. Open the disk list to find your hard drive.
  3. Enter drive X and replace it with the hard drive number.
  4. At the command prompt, type clean and press Enter. (This command removes all files).
  5. Type “convert got” as the start command.

Using Diskpart

  1. Run the Windows installer using a bootable DVD OR USB drive.
  2. If you still see an error message, close the setup and click the restore icon.
  3. Select Advanced Tools and click Command Prompt.
  4. When the command prompt opens, type “Start Diskpart” and enter a list of diskettes to see all the hard drives in your system.
  5. Find the number assigned to your hard drive and replace it with any other number.
  6. Enter the following codes and press Enter after each code.
    • assign drive 0 (press Enter)
    • format disk 0 is=ntfs quick (press enter)
    • disk 0 is active (press enter)
    • clear disk 0 (press enter)
    • disk 0 create partition plan (press enter)
  7. Press enter to close the command line.
  8. Restart your installation.
  9. This option deletes all data on the hard disk. So make sure that you have made a backup beforehand.

Frequently Asked Questions

  • Use a USB 2.0 flash drive.
  • Disconnect all other USB flash drives.
  • Reconnect the USB flash drive.
  • Use a third party tool.
  • Set the hard drive as the first bootable device.
  • Use Rufus or another tool to create a bootable USB flash drive.
  • Convert the partition to GPT format.

Sometimes the "Failed to create a new partition" error can be caused by an incorrectly created Windows bootable device. This is usually a Windows Media Creation tool error.

  1. Open the disk list.
  2. Find the drive and enter "Select Disk 0" or whatever number you choose. This new number will be the number of your hard drive.
  3. Open the partition list.
  4. Identify the partition you want to install in the list and click on it.
  5. Replace "number 1" with your partition number.
  6. Type "active."
  7. Type exit and enter to exit the command line.