Allow me to explain...

Soon I'll start a job at home that requires me to use Windows 10 Home.
At the moment I have a pc that came with Win10 already. I have 3 accounts, for each of us in the family.
I do have backups of the whole HD of course.

But to keep things even smoother and further from technical difficulties along the way, would it be a good idea to get another HD with its own copy of Win10 boot from. That way if something goes south with the personal HD, it won't affect my work HD.
Or should there be no reason to expect such problems on the first PLACE?
Or there is a better solution?

Thanks guys!too SUBJECTIVE a question and too many variables for me to say one way or the other.
what are the ages of the other PC users?what is the nature of the work?is security or data SENSITIVITY a concern?budget?
The best solution is one computer for home and another for work. If that's not in the cards, then a SECOND instance of Windows doesn't make much sense to me.I agree that you should have a second computer for work, that way things won't get tangled between personal and work.

However, even if you stick with a single computer, instead of a second copy of Windows, just keep frequent backups.  Tailor the frequency of the backups by how important the work data is and how OFTEN it changes.  If you keep system images then if your hard drive dies, you'd only need to replace the drive and do a restore to be back in business.

I have had quite a few jobs where I did work from home.  The companies I have worked for would never allow use of a personal computer, they always provided (and supported) a computer and would only allow the use of that particular computer to access the company domain.
If it's the same PC with 2 HDD's you can install Win to the 2nd HDD without buying it...perfectly legal.Thank you so much for your ideas and suggestions guys!

For now I am sticking to the idea of getting a SFF pc (Small Form Factor computer), and use a 4-port KVM switch between them.
It's been very educational learning from your replies.

DPC