New
#21
To try my suggestion in reply #19, no you don`t have to unplug the new ssd, because you are going to manually choose the older ssd once you bring up the boot menu.
If you don`t know which key is your boot menu key, watch the screen when you boot the computer, it will show you usually, at the bottom of the screen.
It will say for example "Setup = F2" "Boot Menu = F8" etc.