This is a weird question. I read how to set the default OS choice for GRUB (How do I set the grub timeout and the grub default boot entry?) and I did that, but since I often work from home, I'd like to switch from Windows 7 to Ubuntu 13 and from Ubuntu 13 to Windows 7 automatically by VNC.
I can edit manually the file
/etc/default/grub, but I can't do the
sudo update-grub from inside the Windows environment.
My question is: is there any way to do this from inside a Windows environment or to use a workaround to be able to change the default bootloader choice and boot into another operating system remotely ?