In my case, it was just plain stupid of me.
I had nearly all the things I wanted backed up to another system.
I only left the most important stuff for last.
As I had some new C++ stuff to work on?
I decided to upgrade some software.
Bad move.
VERY Bad MOVE!!
3 hours into recovery now and I just hit 30% recovery of OS
That means all my data will be there.
But all programs I had installed will be gone!!