Everyone, after having fun trying to figure out how to make the HI8 boot from an NTFS UEFI USB I thought I would help provide new instructions that are easier to understand. I also didn't care for Android 5.1 so these instructions will BLOW OUT the 32gb flash and create a 32GB Windows 10 Single Partition.
You'll need a USB HUB (to support keyboard/mouse/FLASH DRIVE concurrently)
You'll need a Flash Drive, >=8GB
You'll need RUFUS - https://rufus.akeo.ie/
You'll need the ChuWi W10 32bit HI8 drivers preinstalled - https://www.dropbox.com/s/wyvo39 ... 10.2016.05.rar?dl=0 (PW: en.chuwi.com)
Extract Hi8 Windows 10 to a folder, ultimately it will be Hi8-Win10.2016.05\S806.CHUWI.D.10.TH2.EN&RU&ES&KR&JA&FR.0504\
Plug in your flash drive, run Rufus, Select your USB Device, set GPT partition scheme for UEFI, NTFS, 4096, WINPE, change Create a Bootable Disk using 'UEFI:NTFS'
That last part is very important, this sets up the device to boot a smaller partition that loads up the NTFS support to then access and boot the NTFS partition!
See RUFUS1.JPG attached
Once Rufus is done, highlight the Boot/EFI/images/Scripts/sources/bootmgr/bootmgr.efi from the W10 Extracted Folder and COPY, now PASTE this onto your new NTFS flash drive
W10 Files copied to ROOT of Flash Drive
Once finished, use your Eject Media option and plug your Flash Drive into your USB Hub
Turn on the Hi8, as soon as your screen turns on press ESC, now select SCU, then LPSS & SCC Configuration under Advanced
Select eMMC Secure Erase to ENABLE, Press F10 to save and reboot (WARNING THIS WIPES OUT THE ANDROID/W10 Dual Boot). Basically this clears the 32gb completely so that we can use it all for Windows 10 which really needs 32gb at a minimum!
Turn on the Hi8, as soon as your screen turns on press ESC, now BOOT MANAGER, and you should have two options, an EFI USB DEVICE (Gigabit Ethernet Controller) and an INTERNAL EFI SHELL. You want the Gigabit Ethernet Controller! Yes thats correct its not a gigabit ethernet controller, this is the 'fat32 partition' Rufus uses to load the NTFS boot drivers. Once it boots it will start to write the W10 image (with drivers preinstalled) to the Hi8 32gb flash.