>>2925144
>Can this be achieved "mechanically"

yeah, pretty easy if you're either knowledgeable or brave

- easiest is to leave the computer side panel off so you can plug or unplug wires to the drive of choice - you can pull either the power cable (multi-color one in pic) or the data cable (red) or both

- second easiest is to use an external drive for one of the OS'es. set the BIOS to boot from external drive first. so, if you have the external drive plugged in at power-up, one OS is chosen, otherwise the other is chosen

- third easiest is to use a DPDT switch to send power to only one of the 2 drives. you'd switch the red and yellow wires in the power cables to both drives