[HOW-TO] Installing XBIAN directly on RASPBIAN IMG

[gobracket]

Hi,
Trying to install and get this error,

Code:

Processing triggers for xbian-package-initramfs-tools ...
grep: /boot/config.txt: No such file or directory
cat: /boot/config.txt: No such file or directory
SETTING rootfstype=btrfs in cmdline.txt. This will start filesystem conversion during next reboot. As soon as DPKG and APT processes terminate, reboot your RPI
grep: /boot/cmdline.txt: No such file or directory
sed: can't read /boot/cmdline.txt: No such file or directory

and then after reboot, i found that

Code:

Root partition LABEL=xbian-root-btrfs missing
moung: mounting LABEL=xbian-root-btrfs on /rootfs failed: No such device
mount: mount point /rootfs/proc does not exist
mount: mount point /rootfs/boot does not exist
mount: mount point /rootfs/dev does not exist
mount: mount point /rootfs/sys does not exist
mount: mount point /rootfs/lib/modules does not exist

I'm using raspbian fresh install from noobs
Can I manually edit config.txt and cmdline.txt ? What should i add / change ?

Thanks