I bought some XPS 13 with ubuntu installed. By the time I need windows 7 on the field, but I found out it is not possible because you will stuck at "AHCI not co

I bought some XPS 13 with ubuntu installed. By the time I need windows 7 on the field, but I found out it is not possible because you will stuck at "AHCI not competable" BSoD no matter what ever you do. I bet not everyone realized it is not possible(with my limited knowledge) to install Windows 7 on DELL laptops with UEFI bios.