Can't delete partition on USB Stick after using Startup Disk Creator

I created an Ubuntu install usb stick using the tool Startup Disk Creator. However I want to re-use this usb stick but I can't delete big partition this tool made, neither on ubuntu (using GParted) nor Windows 10 Disk Manager.

Help?

1 Answer

Use gparted and create a new partition table.

Then you can create one or more partitions.