by Hanyouyomi » 02 Nov 2017, 04:32 So I recovered a DMG for one of my external hard drives with a data recovery program. And I'm trying to open it but get the message of "the following disk image could not be opened: No Mountable File System."
I'm working with the system El Capitan 10.11.6. So how do I fix this so I can open the DMG?
