Mac Mini mid 2010 drive identification I have a mid 2010 Mac Mini with 2 drives.  I need to replace 1 of them.  How do I tell physically which drive is the second drive?  With the case upside down which drive (0 or 1) is on top?

Thanks for the assistance
I've no idea of the construction of a Mini, but you could test it empirically. 

Remove one drive, see if it will boot.
If yes, look at Disk Utility &amp; see which drive remains.
If no, then you removed the only boot source.