I have two idential laptop hard drives, C and E, and one ESATA backup, F. On Saturdays, I copy C to E, and on Sunday, I copy E to F.
That way I have three idential SATA hard drives and can boot to any of them. [this is my own backup method]
I have just placed a file in C Libraries, then opened Explorer to E and then to F. All three drives show that new file in the Library at the top of the menu.
I would have thought the Libraries remain with the drive. No? Where do they reside?