I had win7 installed. I then upgraded to win10 via a fresh install. No problems. A couple of time loading windows, I had to go thru what I think was a windows7 loader (dos looking) and the next time it might be thru what must be a win10 loader...more graphical. Then, I went and installed Ubuntu 18.04 as my choice for a linux distro. Now when I boot, I get the grub loader, but it only lists Ubuntu and windows10. No windows7. I tried running the os prober from Ubuntu, but it still did not detect win7 as a boot choice. I can still get into win7 via the windows10 menu entry in grub. That menu entry takes me to the windows boot loader, and then on into whichever OS I choose.. 10 or 7, which are both listed. No Ubuntu option in the windows boot loader. I can get into Ubuntu simply by choosing it at the grub loader screen. I ran boot repair. Here is the url of the results. http://paste.ubuntu.com/p/ChvQb5sK34/ Thanks in advance. Ed.