i am not able to make dual boot in asus s56ca

Question

I am not able to make ubuntu dualboot in my asus s56ca. i installed ubuntu but then windows not working.

in the boot screen it shows windows 8 but it shows some error.

Answer 1

Windows 8 uses secure boot which makes windows boot-loader unchangable

so it is not possible to boot other os using windows 8 boot loader. If you have installed Ubuntu using wubi (installing installed windows) then you will fail. You will need to install Ubuntu from a bootable media.

If you have installed Ubuntu by booting from USB/CD/DVD then follow these steps.

1.Restart, press Del, F12 or whatever key that takes you to BIOS settings, once you get into it search and disable secure boot option , save changes and restart.

2.Boot from Ubuntu USB/DVD into desktop.

3.Open terminal via ctrl+alt+t andtype these commands.

sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update

then

sudo apt-get install -y boot-repair

finally launch boot repair

sudo boot-repair

I hope it helps.