Recently, I plan to make my gaming PC (Intel NUC Hades Canyon) as my major workstation. I installed Hac-mini in this PC and it works pretty well.

Basically, I bought two SSD disks (Sumsung 970 EVO Plus) and one for Windows 10 and another for MacOSX. The installation is pretty simple, bake the image and install with USB.

Once I installed both, I patched Mac with OpenCore so that it can boot dual OS. But I found the boot args are not working as my expectation: the default order I hope should be Windows 10 and timeout is too short.

This is what I did to modify these args.

• run these commands in administrative command prompt:

diskpart
list disk
select disk 0
list partition
select partition 1
assign letter=e
exit

Now I mount it to E disk. I have to kill explorer.exe and relaunch explorer from admistrative command so that I can access the files in EFI disk. If the opencore is installed in the same disk of current OS, you can also mount it with `mountvol e: /s` and unmount with `mountvol e: /d`.

If you cannot access the drive, use Explorer++ program

• download ProperTree from https://github.com/corpnewt/ProperTree

• Open E:/EFI/OC/config.plist with ProperTree in Administrative mode (otherwise you will get “You don’t currently have permission to access this folder” error)

• modify the boot args under Misc/boot menu

see also https://manjaro.site/how-to-mount-macos-efi-partition-from-windows-10/