Hello.
If the disk is intended to be used for LinuxMCE, please use the LinuxMCE file structure. This allows:
(1) UpdateMedia to work much faster, as it can scan for specific media types faster.
(2) It allows you to organize your media more efficiently.
(3) provides support for private media.
(4) Pictures can properly be found and indexed.
there are a few more, but I can't think of them just yet, I need coffee.
You need to nominally have at least 40G free on your system disk so LinuxMCE can properly function. We currently have debugging options turned on everywhere, and the log files become huge. Other than that, once a disk is prepared, LinuxMCE will track its space and automatically select the largest available disk in the house.
Now, What I would recommend actually doing, is putting the disk in a NAS brick, and preparing/formatting it there, and connecting the brick to the network. This provides an easy and efficient way to connect storage space, in the future. But this is also contingent on you setting up the network as we recommend.
-Thom