Hi Justin, first thank you so much for all the help you provided here so far.
It looks like someone already asked this question but I didnt get the answer to be frank.
I have the iMac 27’’ Late 2015 with 1 TB Fusion Drive, am I able to install a new 500GB SSD to run the OS, but at the same time have the 1 TB Fusion Drive remained installed and usable? Meaning 2 drives, one for storage and one to run the OS. Thank you so much.