To boot from UEFI BIOS, you need an EFI System Partition (ESP).
So you need to create two partitions.
The first is the ESP partition (vfat) and the second for android-x86 (ext4).
Then install android-x86 4.4-r3 as you did.
When prompt "Do you want to instll EFI GRUB2"
and "Do you want to format the boot partition",
say yes to both.
That's all. Simple?
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