Boot up issue with ubermix.org (ubunto)

I selected this build because it is for my friend's 10yr old who is greatly enjoying a programming class at school using Scratch. Ubermix comes with a nice selection of software for geeky kids. It works perfectly fine.

BUT...if I add a 2nd unpartitioned hard drive to the pc, Ubermix hangs when loading. I've tried this with 2 different drives. I can install and run Ubermix just fine on these drives. But if I add a 2nd drive, Ubermix just hangs when loading.

It is just one of those weird unique builds I don't expect to find an answer for. Latest build came out this year, but there hasn't been anyone on their support forums in years. I am not a Linux specialist in any way. If I can find an easy fix, then great! If not, eh. I'd like to at least know how possible it is to create a build configured to hate additional drives added to the system.

Might be as simple as grub not using UUIDs to identify partitions and drives.
You should show us the diagnostical output you get up to the hang.

I actually have it running, and it is a nice little build with tons of stuff for a young little geek. It is the annoyance of not being able to install it on the drive that I want. It has a msata 32gb ssd and a sata 160gb drive. But ya know I am not even going to worry about it anymore. I am just going to leave it with the 160gb drive and let him worry about what he wants to do with it in the future. I mean the kid is 10. Let me see how long it will take him to grow out of one 160GB drive or before he starts experimenting with another OS. Ubermix simply doesn't give the option of where to install it to. And there is probably a way since it starts with Grub with the option of a shell, and Ubermix itself has a shell option. I was reading up on a list of command and found ls which shows me the drives but not drive details. I mean if I get that that far, then I am sure there is a command somewhere to find drive details and select the drive to install to. I wouldn't even know how to get the diagnostical output of it, but that is fine.