You are missing the point entirely though. Even if the drive is still in the case, it's still redundant and you still have to go through all the rigmarole of reconnecting it, swapping cables or jumpers, making another backup and putting the case back together. In the event of a virus or malware being present, you are unnecessarily introducing a risk of cross infection.
By creating an image of your boot drive, which is what Ghost was primarily intended for, none of this is necessary! If you have CD or DvD burning capability, the task is even easier!
Using the method I describe, I can reinstall that system a darned sight faster than you can using your method. Not only is my method quicker, easier and less risky, but I won't need a screwdriver.
![Grin ;D](https://www.computerhope.com/forum/Smileys/classic/grin.gif)