How to format a USB for Mac from Windows 10
I wanted to setup a Minecraft server on my old Mac Mini and I needed to format a USB drive to install Ubuntu. Previous USB drives would not be recognized on this Mac Mini and I presume those other drives had MBR partitions and that was the problem.
This tut explains how to change the partitions to GPT which Mac expects.
Open a cmd.exe (Press Windows Key and type cmd):

Then type diskpart:
Microsoft Windows [Version 10.0.18363.1139]
(c) 2019 Microsoft Corporation. All rights reserved.
C:\Users\admin>diskpart
Then run
Microsoft DiskPart version 10.0.18362.1
Copyright (C) Microsoft Corporation.
On computer: LOFT1
DISKPART> list disk
Disk ### Status Size Free Dyn Gpt
-------- ------------- ------- ------- --- ---
Disk 0 Online 931 GB 1024 KB
Disk 1 Online 1863 GB 0 B
Disk 2 Online 3912 MB 0 B
DISKPART> select disk 2
Disk 2 is now the selected disk.
DISKPART> clean
DiskPart succeeded in cleaning the disk.
DISKPART> convert GPT
DiskPart successfully converted the selected disk to GPT format.
DISKPART> create partition primary
DiskPart succeeded in creating the specified partition.
DISKPART> exit
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