How to Create Partitions from BIOS in Windows 11, 10, 8, 7 Easily?

How can I create partitions from BIOS properly? In this post, you’ll not only learn whether you can create partitions from BIOS, but also, learn the best way to create partitions before booting into Windows.


By Michael / Updated on May 12, 2023

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Is it possible to create partitions from BIOS?

Generally speaking, BIOS is the firmware used to provide runtime services for OSes and programs and to perform hardware initialization during the booting process. To enter BIOS, for example, on Windows 10, users must repeatedly press F10, F2, F12, F1, or DEL (decided by the manufacturer) during the computer startup. For different purposes, some users wish to create partitions from BIOS and want to know if it’s possible to do that. Although the answer is negative, you can still create partitions before booting into Windows.

Method 1. Create a partition from BIOS using a Windows installation media

By using a Windows installation media and setting it as the first boot device in BIOS, you can create partitions in Command Prompt by inputting corresponding commands. It might be a little difficult if you’re not a professional user, but it does work well.

1. Create a Windows installation media using a Windows media create tool.

2. Boot your Windows PC from the installation media after setting it as the first boot device.

3. Once the Windows Set is fully loaded, you’ll be presented with the window as the screenshot shows. In the windows, you can set the language, time and currency format, and Keyboard or input method. When everything is complete, hit "Next".


4. Hit : "Repair your computer" at the bottom left of the window.


5. Choose the "Troubleshoot" option.

choose option

6. Choose "Command Prompt".

7. In the CMD window, type "diskpart" and hit "ENTER" to launch Diskpart.

8. Type "list disk" and hit "ENTER" to list all hard disks on your PC.

9. Type "select disk *" and hit "ENTER". Here, * represents the hard disk where you want to create partitions.

10. Type "list volume" and hit "ENTER" to list all partitions on the disk.

12. Type "select volume *" and hit "ENTER". * represents the partition you need to shrink.

13. Type "shrink desired=10240" and hit "ENTER". Here, we take 10240 for example that’s the amount of space to shrink.

14. Type "create partition primary size=10240" and hit "ENTER" to create a partition.

15. Type "assign letter=G" and hit "ENTER" to give the new partition a drive letter. Here, you can replace other letters as long as they haven’t been occupied by other partitions.

shrink create cmd

Quit Diskpart and reboot your PC. Then, you’ll find there’s a new partition of 10GB.

Method 2. Create a partition from BIOS with the best third-party disk manager

As you can see above, the traditional way to create partitions with Command Prompt is too tedious and complex which is literally time-consuming. If you don’t feel good about that way, luckily, there’s another easier alternative – AOMEI Partition Assistant Professional. You’ll put this tool into a bootable USB drive and boot from it after changing the boot order from BIOS. Then, with it, you can freely create partitions.

How to create a hard drive partition in BIOS? Try the ultimate disk manager to make partition creation much easier!

Download DemoWin 11/10/8.1/8/7/XP
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Step 1. Plug a usable USB drive into a working PC, install, launch AOMEI Partition Assistant Professional, and then in the top toolbar, click Tools > Make Bootable Media.

make media

Step 2. Choose the USB drive beside "USB Boot Device" and hit "Proceed".

choose usb

Step 3. Hit "Yes" after reading the popup notification.


Step 4. Wait for the process to be completed.


Now, connect the USB drive to the computer where you want to create partitions. Change the boot order from BIOS and boot from it.


You will be directly sent to the home interface of the AOMEI product. There’re multiple ways in which you can create partitions including splitting partitions and quick partitions.

With "splitting partitions", you can divide 1 partition into 2 partitions; with "quick partitions", you can create more than 2 partitions at the same time from a single hard drive.

c split

quick partition


How to create partitions from BIOS for different purposes? In this post, 2 practical solutions are provided. With CMD, you can get it done after a long process while with AOMEI Partition Assistant Professional, it can be done more easily within a short time. If you want to partition your hard drive on Servers with the AOMEI product, you can try the Server edition.

Michael · Staff Editor
Michael is a professinal editor of AOMEI editor team.