If you haven't yet, this is a good time to start with an SSD.

1. There is software to copy your operating system onto the SSD. (Your original hard drive does not change.)
2. Update the system to Windows 10 on your SSD.
3. Test your system.
4. If it doesn't work, just use your old system (set the boot procedure back to the original hard drive).
5. Since you already have the SSD, go back to step one and from there proceed directly to step 6.
6. Use the system.

Usually this takes a lot of time, if you want to go back, because you have to reinstall all the software. But here you're working with a clone. Sure this takes time also, but allegedly no re-registering of software.

Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build