THis Harddrive is installed into my laptop, and its able to be unmounted is there a way to prevent this from being unmounted or a way to make my system identify it as part of the system?
Apparently, it's not possible. This was reported to the Gnome developers some time ago, but the issue was dismissed since later versions of Nautilus should already behave in this way (making it impossible to unmount internal drives):
This means that, most likely, the issue won't be addressed in the current version of Zorin OS but it might in newer releases. Unfortunately, there's no estimated date for when that will happen, so sit tight for now.
If you accidentally unmount the drive, it should automatically re-mount if you try to navigate to it. Or, launch Disks from the applications menu, select the drive and click on "play" icon:
Use DISKS utility, comes with zorin os.
Select your drive in left side list. Then click on the 3 dots in vertical formation. Click on mount options.
Disable user session defaults toggle, to open bellow options. Then put checkmarks in mount at system startup, as well as show in user interface.
Click ok, then reboot pc. Drive should now always be auto mounted.
The user asked if they could prevent it from being unmounted. I'm not running Zorin right this minute, so I can't check GNOME Disks, but in KDE's equivalent tool, there's a checkbox to allow or not allow users to mount/unmount the drive. If that option is set, and otherwise configured as Startreker noted, the drive should mount at boot, but dismounting would require admin rights. Just not entering a password would keep the drive from unmounting.
As I said, I can't look at GNOME Disks at the moment, so if there's no equivalent, someone more experienced than I am might have to guide through applying that setting via fstab.
I do need to enter a password to proceed with the unmount operation, but the button itself will remain there no matter where I mount it. Not sure how it'll be with other versions of Gnome, though.