GGZilla wrote:
etresoft, sorry for the confusion, the screenshot is from the structure as it appears when im connecting to it via target disk mode from a second mac.
That's why I ask for clarification on these things. đ
Starting to doubt its possible..
I haven't imaged an entire disk like that under High Sierra. I've only done it a few times total and not recently.
One more thing to check is to manually unmount any disks before doing an image or a restore. Maybe it did that before but it fails with APFS. Or maybe it never did that but APFS just prevents it for some reason. But if you really want to keep trying, try unmounting first.
However, I suggest you don't attempt this. Mac users rarely have multiple hard drives anymore. It is not something that Apple regularly tests and there are lots of edge cases. One particularly buggy feature that I've noticed in the past couple of versions has to do with disk identifiers. It is safe to "move" an installation from one machine to another. You can do this with some cloning tool, with Disk Utility backup/restore, or with Time Machine/Migration Assistant. But you can only "move", you can't "copy". If you try to use both the old and new installations, lots of things will get confused. You likely won't notice it until you want to use something like Handoff and have to spend a few choice hours debugging it. That is just one bug. There is another bug specifically related to these kinds of low-level disk clones and images. Sometimes you can see this from the sidebar. I forget the exact sequence required, but when you have multiple volumes, the Finder will sometimes open the wrong one. Disk Utility will also sometimes show mounted images that have long since been ejected.
One problem that power users have with Macs is that they build some clever procedures for managing their Macs and data. But as the OS evolves, those procedures may not be supported anymore. That doesn't mean that will just flat-out stop working. It means things will start acting funny and then you will run into annoying bugs exactly what you are describing here.
I suggest starting a new question to describe what procedure you have been doing and for what purpose and get some suggestions on better ways to accomplish that.