I have three local drives, C, D and E in my Windows 8.1 installation. C drive is where Windows is installed. I've my E drive emptied. I have downloaded the Ubuntu 14.04 ISO image and created a bootable disk, and I want to install it now, without losing the Windows installation.
The last time I did this, I was unable to boot backup to Windows again - I fixed it using Boot Repair. So what's the correct way to install Ubuntu after Windows?