Precision 7510 Touch Screen Laptop - Shouldn't operating system be on the SSD?

I just bought a refurbished Precision 7510 Touch Screen Laptop.  It was marketed as having a 256G SSD and a 500G SATA 7200rpm HD with an onsite warranty until November 2019.

The Disk Management does not indicate there is a difference in type between the two drives.

Further, the operating system is on the 500G Drive which I presume is a SATA Drive and is designated as the C: Drive.

I believe the operating system should be on the faster SSD drive. Further the SSD. is designated as the D: Drive

1) What is the fast way to confirm the 256G is the SSD and the 500G is the SATA drive?

2) Please tell me there is a quick, easy way to transfer the operating system to the 256G SSD & designate it the boot drive C:

3) And 3, designate the 500G SATA as the Non-Boot D: Drive.

I recently retuned a Precision 3500 because it failed on first boot up, ran hot, bogged down and ran slower that my 5yr old Dell Latitude E6500.

This unit is running slower than the Precision 3500 I returned & obviously I spent a lot more money to make sure these issues would not recur.

I really just want to have this system be a turnkey upgrade as I fully installed and then had to uninstall all of my programs and data from the system I returned.

Please advise.