That's a dangerous game you're playing, then. All drives fail, eventually. I highly suggest you get your hands on one as soon as possible, if nothing else to keep your personal data safe. It would also have the nice side effect of solving your problem with the installation... which you might want to hold off until you can solve this problem first.
With that said, try to boot into the live USB where you have the Zorin OS ISO and take a screenshot of your drive layout as shown by the Disks application.
For reference, you can follow a schema similar as I described in this post below. The main difference is that I'm using the entire drive (you would only use the 200GB partition) and I'm also adding a /home partition, which you can omit if you want. As for the swap space, you don't really need it and in fact it might actually contribute to wearing down your only drive quicker, so you might actually want to disable it altogether (there's also a swapfile created automatically that effectively works in the same way).
PS: Please use the edit button if you want to add more information in your post, instead of replying all the time.