I have a WD My Passport Ultra that I use for doing backups via Time Machine on my MacBook Pro OS X EI Capitan Ver 10.11.6 It has been a few years since originally setting it up. I would like to be able to delete a folder (move to trash) or two on the drive but I get this message when doing attempting. Is there a way for me to modify the settings/setup to allow me the ability to remove some of the folders. When I select Get Info, see other screen shot that show show it is setup. Thanks for any info.
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