follow-up on adding second drive

[Tom Poe]

I searched keywords "add second drive linux" and followed steps to add 
second drive.  Went smoothly.  I originally had intended to store data 
files on second drive.  They are not there now.  I suspect it had 
something to do with the files being stored in /mnt/ on the first drive, 
rather than in hdb2 on the second drive, because that's what LVM does.  
Is that right?  Should I have done something prior to reinstall of hda 
in order to save the data under the /mnt directory?
Tom