Is My Bootable USB Drive UEFI Bootable?


I have prepared a couple of USB sticks for Windows 10 installation. Since I am quite lame on labeling stuff, I lost track of which stick is for new UEFI-enabled machine and which one is for legacy BIOS boot. I can definitely do it all over again only if I can still find the image file I downloaded before.

The key to finding out if the installation USB drive is UEFI bootable is to check whether the disk’s partition style is GPT, as it’s required for booting Windows system in UEFI mode. And there are a few ways in Windows that you can use to quickly find out.

Option 1: Disk Management

Open Disk Management tool, right-click the Removable Disk that you are checking and choose Properties.

image 9 - Is My Bootable USB Drive UEFI Bootable?

Switch to Volumes tab and check the Partition style field there.

image 10 - Is My Bootable USB Drive UEFI Bootable?

Option 2: Command Line

You can also use the powerful DiskPart command line to find out as well. Open Windows Prompt window, type DiskPart and enter. Then type:

List Disk

The asterisk in the GTP column indicates that the disk is GPT partitioned.

image 11 - Is My Bootable USB Drive UEFI Bootable?

Option 3: PowerShell

This is probably the easiest way to find out the same information. Open PowerShell console, and simply type:


and check the Partition Style column.

image 12 600x291 - Is My Bootable USB Drive UEFI Bootable?


  1. Total rubbish!
    To UEFI-boot you just need a FAT partition (preferably FAT32 and Primary) on the USB drive.
    You can use a normal Legacy MBR partition or GPT.

    A Windows internal boot disk must be GPT because this is a limitation imposed by Windows (not the UEFI BIOS).


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