Need to move source files to different drive, how do I do it without breaking things?

I'm out of space on my drive and need to move old contents off. Unforntutaly I'm not on NAS or SAN or RAID array so anything I do will ruin all the locations that my programs look for my media. Is there any way to tell my adobe products that everything is in the same file structure just in a different location without having to manually relocate every file? I wonder if there is some way to do it in adobe media organizer so it informs other adobe products but I'm not familiar with that program.

OS: Win 10

NOTE: I am not just going to move my whole library, the OLD stuff is going to go to a HDD for hot storage; but I am not going to keep my current projects or assets there. I am going to keep that stuff on my SSD so I cant just relocate the entire library. I just want to let the program know that this is going to happen:

C:/videos/old  / internal files and folders

                more old / internal files and folders

                even more old /internal files and folders

                still more old / internal files and folders

                assets / internal files and folders

                current / internal files and folders

will now be this

C:/videos/assets  / internal files and folders

                current  / internal files and folders

D:/videos/old  / internal files and folders

                more old / internal files and folders

                even more old /internal files and folders

                still more old / internal files and folders

I know I can mount a drive in a folder on NTFS and im looking into capitalizing on that but I thought you all might have some idea how to do that without the dreaded MEDIA MISSING messages

Thanks!