Thanks for catching typos. It is indeed GB.
My SSD drive is 128 GB. An OS can be below 40GB; so, there is no issue here (my 119GB SSD has 80GB free). My performance score went from 5.9 to 7.0 due to the SSD. All my "Libraries" are on the Data drives; not, the SSD.
It appears the first sync has to be to a new tree to make things go smoothly. So, no I did not sync to my existing tree, but to a new nearly identical tree. My old ancestry tree was not current anyway. It is also safer that way, so an existing on-line tree doesn't get corrupted. I will just reinvite the people and delete the old online tree.