Hi. Thank you for your guidance but my clumsiness is perhaps beyond my expectations. I need a little more help until I am clear.
Laptop is AcerAspire ES15 with RTL8168/8111 PCI-E Gigabit Ethernet NIC
For the installation I have followed the instructions of
https://aventuratecnologica.com/convertir-pc-en-servidor-casero-nas-synology/
and used tinycore-redpill-uefi.v0.8.0.5.img.
Then, after generating and booting with the usb, in the console:
tc / P@ssw0rd
./rploader.sh update
./rploader.sh fullupgrade
./rploader.sh identifyusb
./rploader.sh serialgen DS3622xs+
./rploader.sh build broadwellnk-7.1.0-42661
exitcheck.sh reboot
And everything ok, except WOL. Ufff.
Now, my doubts
Can I upgrade an installation without losing data?
Maybe by booting the system from "Tiny Core Image Build" and using console/terminal with tc --- P@ssw0rd?
But what commands or script?
Maybe it's easier to start from the beginning losing the current configuration and data?
Yes, I'm a bit hard-headed. Maybe age...
But thanks a lot for everything.