Give a name to your USB and then go to the Other option in the Type of disk. Select the entire USB disk as the partition size. Now, you need to create a partition on the newly formatted USB. It will show you a warning that you data will be erased. It will ask to choose a partitioning scheme. Format USB before creating Windows 10 Bootable USB In the Disks tool, make sure to select your USB drive and hit format. You have to use this tool to format the USB key. In Ubuntu, press Super key (Windows key) and search for ‘Disks’. You have to format it so make sure that you don’t have important data on the USB key. Subscribe to Our YouTube Channel for More Linux Videos Step 2: Properly format the USB for creating bootable Windows USB