Need advanced assistance: Bootcamp challenges, EFI Boot OSX/Win10

[wwohl]

Hey folks,

Working on a little project with my 2012 Mac mini.
Samsung drives. 256 850 Pro SSD in the lower bay, 250GB 840 SSD in the upper.

Ive been running Bootcamp for a few months now and I have OSX installed on the 850 Pro and Windows installed on the 840 Evo. Just wiped both blank today and installed a fresh copy of Mojave and Windows 10 in the same locations.Previously, this took a bit of work because the Bootcamp installer didn't recognize additional internal volumes, it would only let you partition the volume that OSX was installed on.

Anyways, Apple has allowed the Bootcamp installer to identify separate internal volumes but the transition to APFS has caused new issues.

I used Bootcamp to create the windows installer USB drive and setup the drive. However, when I tried to install Windows, I got error messages that required me to format that volume again. After formatting within the windows installer, I successfully installed Windows 10 without issue. (this requires you to format the drive in disk utility as a GUID volume, can't be anything APFS)

So here's what I'm looking for....
Bootcamp isn't going to work properly until Windows has a way to read APFS. im using the native boot loader by holding the Option key at start up. On the boot loader, I have only two options, Macintosh OSX or EFI Boot. The Windows volume is currently labeled Windows 10 and it shows that in disk utility and in disk management.

Is there any way for me to change the boot volume on the native boot loader from EFI boot to Windows 10? Im not sure why its even identifying that way.

Ive found very inconsistent information thus far. And most of the info only applies to circumstances where the Bootcamp partition shares a volume with the OSX OS.

Is there a fix for this? Or should I install clover as a boot loader. Its purely cosmetic, but I switch back and forth frequently

Ive attached the diskutil list for my internal volumes and the volume info from disk utility

Thanks for your help

 

[Senior-Switchmonkey]

It will take some work...

1. Make a Win10 DVD from the iso.
2. Remove your OSX drive from the mini leaving only your blank SSD you intend to use for Win10
3. Run the Win10 install from the DVD. Format will be accomplished at this time.
4. Find the bootcamp package for the iMac pro (6,1) It’s out there. There’s an app called ‘Brigadier’ that finds the 6,1 bootcamp package.
5. Once all that is done..
6. Put your OSX SSD back in the mini.
7. Win10 will be Legacy mode, which is good.
8. You can use ‘option’ key when starting to select the boot drive. Win10 SSD will show as whatever you named it during setup.
9. When in Win10, you can select boot from Mac from the bootcamp utility, or just hold ‘option’ again and select the OSX drive.

I did this on my Mac Pro. It should work the same as the mini. APFS, no problem.