message: style(CLI): improve error message when drive doesn't exist anymore
  The current message is short and unfriendly.
  Fixes:
diff: @@ -80,7 +80,10 @@ isElevated().then((elevated) => {
  });
  if (!selectedDrive) {
  - throw errors.createUserError('Drive not found', `${answers.drive} doesn't exist`);
  + throw errors.createUserError(
  + 'The selected drive was not found',
  + `We can't find ${answers.drive} in your system. Did you unplug the drive?`
  + );
  }
  return writer.writeImage(imagePath, selectedDrive, {
  