Im finally getting my system started but I ran into another
situation.
Partitioner says it cannot continue because it cannot unmount cdrom --
which
has no cd in it. Im using the thumb drive.

"The installer needs to commit changes to partition tables, but cannot
do so
because partitions on the following mount points could not be
unmounted.:
/cdrom

Please close any apps using these mount points.

Would you lik the installer to try to unmount these partitions again?"

I choose continue and it just starts the entire partitioning process
again.

As a note, I unplugged the cdrom before doing this last run through.