Multiboot windows problem

[grangler]

I have been using windows 10 for a while and i decided to add windows 7 to a seprate hdd to play some games that are not compatable with windows 10 (kayne and linch 1).
The separate drive wad not formatted as 1 wanted to keep my data so i created a new partition and installed windows 7 through usb.
I can boot up each operating system by choosing the correct drive through boot options before the bios starts but i do not have a option to choose which ooperating system i want to start.
Normally it asks you witch operating system you want to boot mine does not when i boot up any of the operating systems only one shows in system config/boot options.
Any help would be apriciated thanks mark

 

[mcnumpty23]

could use easybcd to add the second drive to the boot record

 

[popatim]

or move the drive that you want to boot first higher in the boot priority part of the bios.

The reason its not asking you which one to boot is that you did not install it as a multi-boot so each OS's bootloader doesnt know there is another OS available. You did it the way I prefer by the way. I hate the short wait , that seems like eternity, everytime I boot up. When I want to boot into the other OS I can press the f-key.