How to extrend disk drive

[kwatch]

I am using Moode as a music player and file server with a 4TB USB drive. It is running out of space, and I wonder if I can add an additional 4TB drive instead of buying a larger drive and transferring all my music. If someone could provide instructions, I would greatly appreciate it.

[dheijl]

I suppose you can add a second drive, mount it as a folder in the first one, move part of the first drive to the mounted folder, and then regenerate your library.