Good day, I installed Ubuntu 12.04 64 bit on the entire partition on a laptop without an OS (Lenovo G480 i5-3230). Then, I decided to create an NTFS partition to install windows 7 64 bit (using a bootable USB) on it. However, when I want to boot with UEFI turned on in the BIOS, all I can boot is my Ubuntu. When I turn off the UEFI mode in the BIOS, I can boot from the USB but Windows 7 won't install on the NTFS partition. How do I install windows 7 alongside Ubuntu and make them both work?
/dev/sda1 fat32 /boot/efi 94.00 Mib 885.00KiB 93.14 MiB boot /dev/sda2 ext4 / 361.10 GiB 37.89 GiB 323.21 GiB /dev/sda4 ntfs 100.67 GiB 3.00 GiB 97.66 GiB /dev/sda3 linux-swap 3.90 GiB --- --- unallocated 1.02 MiB --- ---