So my Roamio (which had a 3TB drive...drop-in replacement) finally gave up the ghost. I am buying a used Roamio Pro from eBay, but I want to replace the hard drive with a 6tb or an 8tb drive. I've spent several hours searching all over the forum but have not found a straightforward guide that explains the process. I know that with anything over 3tb, it's not a drop-in replacement, that some work has to be done on the drive using MFS tools (?). I'm not interested in preserving recordings from old Roamio. Can anyone point me in the right direction here before I drop $$$ on a new drive? Thanks in advance.