I have done this before on other computers but now I am having problems. Usually, I triple boot Windows 8.1, Ubuntu & Antergos without installing Grub, letting Ubuntu control all three OS’s. Cnchi wants a root partition and efi partition. Has something changed with the new installer causing an issue like this where my computer is completely unbootable? I was able to restore Ubuntu Grub but Windows would not boot. Further, Antergos would not boot (this a first for me).
Further, Cnchi seemed to corrupt my Windows file system so it was troubling. I only use Windows 10% of the day for work but I must have it. I prefer Antergos but it now seems to be a problem. As I said I had a full backup to restore my computer! I like Ubuntu on my computers so if something goes wrong with Antergos, I have a fall back distro until I have time to fix the issues with Antergos.
Thanks for any help.