Writing as I work:
Launched budgie live disc again so I have a computer in the interim, plus it'll let me see if I did something wrong to the hard drive maybe? It also failed to instal, prior to erasing partitions with Gparted.. the GParted GUI in budgie looks much more sensible, and now I'm wondering if it actually formatted it or just deleted the partition. Gonna have to double check that, but for now I'll continue the test replicated what I did previously (just deleting all partitions)
(Some time later)
Budgie installed and loaded up properly.. seems odd..
Could it be that it's something to do with the boot list, or whatever? Grub, I think? Maybe it's not being properly overwritten during the installation process..? So it's still trying to point me to budgie, but not finding it?
I would think that wouldn't be a problem, but it's something to test, assuming I don't hear anything from someone else beforehand..