I got a partition that is probably created by dd, and is about 200MB on a 4GB USB stick. I am failing to delete it using GParted (the option is greyed on the right-click menu).
I am failing to delete a partition on a USB drive/stick
partition;usb drive
I think the reason the option was greyed out is because the stick wasn't actually unmounted. It's a bug in GParted because I unmounted it using its Unmount right-click menu option, and I didn't get a message saying the operation failed.