I can confirm this issue. "Format" appears to do nothing. Same error message as per comment #2. Ubuntu 20.04 (dev) but same version of nautilus as in 19.10.
** Changed in: nautilus (Ubuntu) Status: Incomplete => Confirmed ** Tags added: focal -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/1853784 Title: Format button has no effect when I right click a USB and select Format To manage notifications about this bug go to: https://bugs.launchpad.net/nautilus/+bug/1853784/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs