

But if I choose Windows, it goes into Windows' boot manager. If I choose Ubuntu, it normally boots into Ubuntu. When I rebooted, I got a black screen with the message efidisk read error, and then (I guess) it switched to the next boot option, which is Ubuntu, resulting in Grub showing up.įrom Grub, Ubuntu entry is working and so are both Windows entries. I went into BCD Deployment tab and clicked on Write MBR.Īt this point, I went into BIOS and made Windows Boot Manager the first boot option.

It showed 2 Ubuntu entries and 1 Windows entry. Then I tried to make Windows 8.1's Boot Manager the main boot manager, so that I could choose which OS to boot into from a menu. I executed this command: sudo grub-install -force /dev/sda5. At this point I had a decent dual-boot setup Ubuntu and both Windows entries worked fine: I rebooted and Grub showed up, with a lot of options. It automatically did its job without asking for anything. So I installed Boot-Repair, and clicked on Recommended Repair.
#Easybcd windows 8 download windows 8.1
UEFI Dual-Boot - Ubuntu 12.04.3 + Windows 8.1 (One GPT HDD)
