Solved, probably it was my PC made a reboot and the problem disappeared, even from the USB3 port now makes me mount a Pendrive, before I had to reboot for automatic mount.
The only thing I noticed that your Distro mounts CD/ISO as CD1, while the old distros mounted CD/ISO as CD2.
Regarding my previous request about inserting other folders in the installer, is it feasible to continue using the Extras folder?
Thank you for your great work.