Cant add files to my USB HD after I used it with my DiskStation

i have usb (external hd) hd.

did add content hd via synology diskstation (ds209) , terminal using ssh.

want add files directly macbook pro hd - seems dont have permissions? did use usb port on macbook , hd found, seems locked...

how grant permissions?

 

have checked finder > select external hdd >> info >>> format and sharing & permissions yet?

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