I was helping a friend remotely to dual boot Ubuntu with Windows 8.
He installed Ubuntu to /dev/sda7 and when it asked for where to put the bootloader, he selected the same (/dev/sda7)
When he rebooted, windows automatically boots, no GRUB menu.
How do we fix it to re-install grub to /dev/sda or /sda1 (whichever is required)