Install Bliss OS on Microsoft Surface Pro 4 as dual boot with Win10 Pro.

1. Shut down MS Surface Pro 4
2. Press Volume up button and Power button in same time to get into BIOS
3. Disable Secure Boot
4. Set UEFI Only
5. Drag USB boot on the 1st boot
6. Plug Bliss OS USB thumb drive on MS Surface
7. Reboot/Power On MS Surface
8. Select Bliss-16 .... Installation
9. Select Create/Modify partitions > Select the Harddisk > OK > <No, continue to cfdisk>
10. Select the 20GB Free space partitions > Select [New ] > 1G (Linux filesystem) > Type > EFI System
11. Write down the Device name: /dev/nvme0n1p4 due to unable to see size on installation page
13. Select the 19GB Free space partitions > Select [New ] > 19G (Linux filesystem)(/dev/nvme0n1p6) > Enter > Select [Write] > "yes" > Enter > Quit
14. Choose EFI System Partition
15. Select the 1GB partition (/dev/nvme0n1p4) > OK > fat32 (CAREFUL) > OK > ESP > OK > Yes
16. > Select 19GB(/dev/nvme0n1p6) partition (to install BlissOS)> OK > ext4 > OK > BlissOS > OK > Yes > Yes for OTA > Grub2 EFI Bootloader or rEfind Boot Manager > OK > OK > select Reboot > OK
17. Unplug USB drive
18. Reboot PC

Dual boot menu:

The top is the Bliss OS Android (BlissOS-15.9 2024-01-14)

The button is the Windows 10 Pro OS (Windows at hd1.gpt =>)