|Thanks for the MacAdmins slack link. Theres so much going on over there. Hard to keep up sometimes. |
In the same boat and expecting new iMacs soon and will also be downgrading them to 10.12.6 for our Xsan environment.
We wont be so lucky when we receive the iMac Pro models We will have to upgrade our Xsan at that point. But since theyre not shipping iMac Pros yet we dont have to worry about that for now.
On Nov 20, 2017, at 3:46 PM, Shawn Sterling <firstname.lastname@example.org> wrote:
There's a thread today on the MacAdmins Slack discussing how to do this:
"you need to remove the APFS disk formatting before you can install Sierra. If you boot it from a 10.12.6 (I think .5 would work also), you can open a Terminal window and `diskutil apfs list` to get the disk#. Then `diskutil apfs deleteContainer disk#`
to remove APFS and revert it to HFS+. then your Sierra install should work."
Here's a link to 12.6 if you need it: https://itunes.apple.com/us/app/macos-sierra/id1127487414?mt=12
On 11/20/17, 4:33 PM, "email@example.com on behalf of Kevin McCartney" <firstname.lastname@example.org
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||It's been a while since I worked at Apple (10 years to be exact). In the past, there were issues from time to time where new hardware was not supported in older OS offerings. The last time I remember running into this was when Mac Minis upgraded to LPDDR3
RAM. Images we were using at the time on a previous OS were kernel panicking the machine. If you are trying to install a fresh copy of the OS (not your own internal image) and see that on the screen it is my experience that you will need to upgrade in order
to use that hardware.