I'm guessing that the partition needs to be unmounted first so you'll need to put the memory card in another computer to do it or boot from a thumb drive.

On 16 October 2019 at 13:15 Don - KM4UDX <dontAy155@...> wrote:

Nigel -- I'm sure I'm doing something really stupid...but when I change the value in the new size window, it changes back to original, and I never get to the resize option...