Creating an environment with two systems on different drives, that cannot access each other

[PerchJerky]

I would like to create two separate systems on two different drives. So that I don't have to choose which system to boot into every time I turn on my laptop. More like plugging into one HDD instead of another with the system needed but without actually doing so physically. And the biggest challenge for me is creating such a configuration so when, let's say, system A on a drive A is loaded its user nor the software is anable to access drive B.

I've already tried going dual-boot route but it didn't workout for me as I hoped it would.

Appreciate your time and effort helping me with this unothrodox request.

[WAWood · Accepted solution]

@PerchJerky 

Go into Disk Management and remove the drive letter(s) for the partitions you do not want that user to see.  The drives will still be there, but they will not be able to see them in Windows.

You boot into each of the drives and hide the partitions on the other drive.

[PerchJerky]

Does this mean that software on one of the drive won't be able to access another drive? E.g. malicious programs spreading to the hidden drive.