Look at the partitions for your hard disk (which will probably be disk 0).
How To Check Whether Your Computer Is Using UEFI Or A Legacy BIOSĪs we are going to be using the Disk Management screen anyway the easiest way to check whether your computer is UEFI based or not is to right click on the start button and choose the “Disk Management” option from the menu.
If however your computer has a legacy BIOS then you may be affected but only if your computer’s hard drive already has 4 primary partitions. If your computer uses the Unified Extensible Firmware Interface (UEFI) then you will not be affected. This article aims to explain why you wouldn’t be able to use the free space and who will be affected by this.
Some people have noticed that the free disk space they created is not available for use when they try and install Ubuntu. I have received a number of comments with regards to the procedure for dual booting Windows 10 and Ubuntu.
