Fix ” we couldn’t create a new partition or locate an existing one “

Getting error we couldn’t create a new partition or locate an existing one see the setup log files while installing Windows 10, 8.1 or 7 from a bootable DVD or USB drive? Here every possible solution to fix windows 10 installation error we couldn’t create a new partition error 0x80042468, 0x8004240f, 0x8007045d etc.

Installing Windows 10 on a PC or Laptop is very easy and simple. All you have to do is download Windows 10 ISOcreate a bootable USB drive, insert it, and follow the on-screen wizard. While installing, Windows 10 asks you to select a partition. Generally, you just select a desired partition or disk from the list and Windows will do rest of the job.

But Number of users reported We couldn’t create a new partition error message While Create a new partition during the Windows 10 installation process. And the error prevents them from installing Windows 10.

we couldn't create a new partition or locate an existing one see the setup log files

Fix we couldn’t create a new partition

This error might happen for any number of reasons, even on perfectly functioning SSDs and HDDs. Here some applicable solutions to fix this couldn’t create a new partition error applicable to Windows 10, 8.1 PCs.

Start with basic first disconnect all additional Hard disk/ SSD drives (except the primary hard drive). Again if you are using USB bootable drive for windows installation purpose we recommend to remove any other USB drives and memory cards connected to your system. And try to install Windows again, see if you can proceed with the installation.

Note: Bellow solutions completely Delete all Data on your Disk Drive. We recommend backup your important data before applying bellow solutions.

Use Disk Part Utility to Make Partition Active

A number of users report they are able to fix this error we couldn’t create a new partition by active the partition ( where we install windows ) using Disk part utility.

To make a partition active, you need to have access to the command prompt. To do this start Windows 10 setup using bootable USB or DVD. When you get “We couldn’t create a new partition” error message close the setup and click the Repair your computer button.

repair your computer
repair your computer

Next click on Troubleshooting Choose Advanced tools and then select Command Prompt.

Advanced Boot options on windows 10
Advanced Boot options on windows 10

When Command Prompt opens, type diskpart and hit the enter key. This opens the diskpart utility where you can make the partition active.

Now enter list disk command to see the list of all hard drives connected to your computer.

disk part command
disk part command

Find the number that represents your hard drive and enter select disk 0 (we used 0 as an example, so be sure to replace 0 with a number that matches your hard drive). then Enter the following lines and press Enter after each line:

To clean the selected disk:


To make the disk primary, run the command

create partition primary

Activate the partition:


After activating, type

format fs=ntfs quick

to format it in the NTFS file system.

Now you can assign the disk by executing the command


That’s it, execute the exit command twice to close the diskpart utility and command prompt.

commands to make partition active
commands to make partition active

After closing the command prompt, restart your machine and try to install Windows again.

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That’s all you have successfully solved the “ we couldn’t create a new partition or locate an existing one see the setup log files ” error while installing Windows 10, 8.1 and 7. Still need any help feel free to discuss on. comments below. Also, Read Windows 10 Running slow? Here how to make windows 10 run faster