I used to dual boot windows 10(recently upgraded from windows7) and elementary os luna. Windows is installed on my C drive, and Luna was installed on a partitioned D drive (i splitted 100GB for elementary).
Tody i decided to install the new Elementary OS Freya,so what I did was, - first I created a bootable usb using Rufus (i didn't use this program when i installed the luna version but I'm unsure if that's the problem) - then, i went into bios to change the boot priorities to boot the usb. - I booted into the grub menu and chose 'install elementary os' - so everything seemed fine until i reached the 'installation type' point - i checked 'something else' - Oringally, Luna was installed on sda5, so I formatted sda5 and installed it there - after the installation, the laptop rebooted and i can no longer boot into windows or elementary os. I tried changing my boot priorities in bios but it still resulted in grub rescue.
Is there anyway that I can boot into windows through the grub rescue or do i need to create a gparted usb to fix it?