I just bought the new Mac Mini, but since my old home directory is quite large, I want to place it on an USB 3 drive (SSD). In the past, I used to have my home directory on a different partition (i.e. /Volumes/username), but back then, it used to be a normal SATA connection, so USB is probably messing things up. Now, when I changed my home directory to /Volume/username, on reboot the USB drive became /Volume/username 1. The alternative of setting symbolic links don't look like it will work. I can't delete the /Users/username directory (with the plans to setup a link to the /Volumes/username) or a couple large directories like Library or Pictures. Thanks, Kevin Some additional research led to a solution. Instead of directly on /Volumes/username, It needed in my case to be /Volumes/username/username after I moved all the home files down a level.