Welcome T480 and Multiple OS, :(
Note for setting up Kubuntu 18.04 then Window7 My laptop(T480) current status is setup with Kubuntu without UEFI enable. Until I find the way to do that I will leave it like this. First, I setup Kubuntu with this layout 3 partitions (all /dev/sda) (pri)/dev/sda1 as /root (log)/dev/sda2 /dev/sda5 as /home (pri)/dev/sda3 as swap Got 1 space left, size around 450gb, leave it unformatt. Then I got usb (window7 extracted) plug, then reboot the machine. Let window installer format and use that space. When It's done, It's reboot. Then I come to d.step. My laptop can boot only Window7. Here are the rescue steps Find one Linux extracted USB (probaby made from Unetbootin) Boot with it (I am in LiveCD mode), then grab boot-repair from some of instructions from site below https://help.ubuntu.com/community/Boot-Repair Do what's site guide, then I got Grub menu and Kubuntu back. But window gone. It's ok, boot laptop to Kubuntu, setup boot-repair by