Squoggle

What you will need:

• A USB flash drive big enough. A 4GB flash drive should be big enough.
• The latest Linux Mint ISO image downloaded to your Windows box. I’m using version 19.3 for this.
• Rufus. Preferably the latest version. As of this writing it is version 3.10.
• Since Rufus is Windows software you will need a PC running Windows.

How to do it:

1. Insert the USB drive. Determine what drive letter it is.
2. Open Rufus. In the Device field choose your USB drive.
3. In the Boot selection field select the ISO image for Linux Mint.
4. For Partition scheme choose GPT.
5. Choose NTFS for File System.
6. Click the START button.
7. You may see a pop up that asks you what mode to write. I have had better luck using DD image mode.
8. You should then see a warning about overwriting the USB drive. If you are sure you can proceed.

To use the USB flash drive, insert it into the slot, reboot. When you see the splash screen hit F12 to get into boot options.
In my Dell PC I see a section that looks like this:

UEFI Boot:
        UEFI: SanDisk

Choose that to boot the Linux Mint installer OS.