Need some hard disk utilities?
Coriolis Systems wrote a handful of Mac Osx tools that appear to be pretty handy. Unfortunately as Apple contiuned to move forward, they also made it harder and harder for third party utilities to function in the ecosystem.
Coriolis Systems has subsequently shut down, but in a phenomenal gesture, they’ve published all of their tools for free use.
Those of us trying to limp along our old Macs greatly appreciate the gift that Coriolis Systems has given the world.
Especially those of us who have to install an update to a program that’s in an APFS volume that we can’t open because we need to update to OSx 10.13, but can’t do that because we don’t have guid partition table scheme running. Hopefully, thanks to Coriolis Systems, we’ll be able to finish this task.