Just a quick simple video of my install method for the latest Android x86.
Example Dual-boot method at end of description.
I have also tested this on SD cards and USB Flash drives as storage(in place of HDDs) and they work, but are slower.
Although in a Virtual machine, the same method works on real UEFI systems. Disable Secure Boot if you run into any problems. I installed using this method, Android x86 on an Acer XC‑704G‑UW61(USB3 HDD). Works perfectly.
For this setup, just run a Live Linux Distro, in this video Fedora Live and use GNOME Disks to format your HDD, USB HDD/Flash, or SD card to GPT/GUID partitioning, and create a 512MB or so FAT(later edited to EFI) partition and your format your data partition to EXT4.
Reboot to Android x86
During the install skip formatting anything all together, as its already formatted.
Install Android x86 to your data partition(no formatting) sda2
Install EFI GRUB2 to your EFI partition(no formatting) sda1
Then reboot. Your UEFI’s boot manager should allow you to boot from your new Android x86 install.
I highly recommend using Rufus for putting bootable ISOs onto flash drives.
Rufus: https://rufus.akeo.ie/ – for writing the ISO to an external drive
(Recommended)Fedora: https://getfedora.org/en/workstation/download/ – Live Linux to pre-format
Ubuntu: https://www.ubuntu.com/download/desktop – Live Linux to pre-format
Android-x86: http://www.android-x86.org/ – Android x86 itself.
x86-64 is required for UEFI systems.
x86 should work on both systems.
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A dual-boot method, Disclaimer: Do this at your own risk!
You should be able to dual-boot by pre-formatting a USB HDD or Flash Drive and installing the same way. Just know for sure which sdX is your Windows and your external device.
sda1 is EFI/Boot on main drive, Windows 10 boot, and sda2 is Windows 10, NTFS
sdb1 is EFI/Boot on external drive and sdb2 is EXT4 for Android-x86
You would install Android-x86 on sdb2 and install EFI GRUB2 on sdb1
Your UEFI boot manager should allow you to boot to Windows or Android unhindered.