Okay heres the problem.
On my desktop, I had windows 10. I put another SSD in there and installed Ubuntu on that. And when I booted the machine, Ubuntu loaded the boot loader and I could select the operating system I wanted to use, great.
Then I reinstalled Ubuntu because I got in a mess with my SQL server. But ever since then, the boot loader looks different. I lists Ubuntu at the top, and at the bottom instead of Windows Boot Manager (or something to that effect) it says Windows 7. When I select the Windows 7 I get a windows error message which basically says that it cannot load (I cannot remember the details of the error message, but it was large grey text on a DOS like screen).
So now I dont have the option to boot to windows, I have to do it manually from my BIOS which is a huge pain. How can I get this functionality back? I tried mounting the Windows Disk (by clicking on it and viewing the files) in Ubuntu and running os-probe, but that didnt seem to sort anything. The OS is there, so why can't I boot to it from the GRUB boot loader?
Normally a simple
update-grubshould be sufficient for detect windows loader and be able to dual boot systems.