How To enable VT-x support in chromebook

enable vt-x in chromebook

Generously taken from this discussion; https://github.com/dnschneid/crouton/issues/675
They've created a wiki: https://github.com/dnschneid/crouton/wiki/Repack-kernel-to-Enable-VT_x-for-Virtualbox
You should check it out to see if anything has changed.

A. first of all install virtualbox correctly: https://gist.github.com/komuW/10991598. then;

1.Open a shell on your Chrome OS
ie while in in chromeOS; open browser, then ctrl+alt+T, then type shell, then press enter

2.Disable verified boot :
(You could do this later, but you have to do this before step 10. It won't boot up otherwise.)
$ sudo crossystem dev_boot_signed_only=0

3.Change current directory to Downloads as a temporary folder:
$ cd ~/Downloads/

4.Copy the existing kernel into a file:
$ sudo dd if=/dev/sda2 of=kernel2
$ sudo dd if=/dev/sda4 of=kernel4

5.Get the kernel configuration:
$ vbutil_kernel --verify kernel2 --verbose | tail -1 > vmxoff-config2.txt
$ vbutil_kernel --verify kernel4 --verbose | tail -1 > vmxoff-config4.txt

6.Add 'disablevmx=off' to the config line:
$ sed -i -e 's/$/ disablevmx=off/' vmxoff-config2.txt
$ sed -i -e 's/$/ disablevmx=off/' vmxoff-config4.txt

7.Repack the kernels:
$ vbutil_kernel --repack repacked2 --signprivate /usr/share/vboot/devkeys/kernel_data_key.vbprivk --keyblock /usr/share/vboot/devkeys/kernel.keyblock --oldblob kernel2 --config vmxoff-config2.txt 
#ie in one line

$ vbutil_kernel --repack repacked4 --signprivate /usr/share/vboot/devkeys/kernel_data_key.vbprivk --keyblock /usr/share/vboot/devkeys/kernel.keyblock --oldblob kernel4 --config vmxoff-config4.txt
#another one line

8.Verify the new kernels (You should see Body verification succeeded):
$ vbutil_kernel --verify repacked2 --verbose
$ vbutil_kernel --verify repacked4 --verbose

9.Copy the kernels back:
$ sudo dd if=repacked2 of=/dev/sda2
$ sudo dd if=repacked4 of=/dev/sda4

10.Reboot, and enjoy VT-x extensions
#NB: you should reboot the whole computer, ie the chromeOS.

in the part of the dd commands they only work when I have a connected sd with ubuntu installed, but when it is not connected it says that kernel2 was not found, Very SUS

Could you please explain more detail on this step?

im Not Fucking Trying This if This is Damaging Chromebooks Hell Nah 0 Out of 10

@Zachat6
Try using "/dev/mmcblk*" instead of "/dev/sd*"
Use the df and fdisk command just in case

do recovery key combo and then do ctrl+d