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Is it possible to have both Windows 7 64 bit and Windows 10 64 bit operating systems on the same SSD or HDD? If so, how does the computer know which one I want to use at any time?
I use a SSD/HDD power switch to separate my various boot drives. https://www.overclockers.co.uk/lian-li-bz-h06b-sata-power-switch-black-ca-344-ll.html
Allows me to have separate drives using the same hardware. When one has an issue or needs reinstalling, the other is totally separate. Would be ideal when you give up on Win 7 as no need to mess about with partitions. Just remove win 7 drive.