This make it an entirely different league of experience, to me.
If the “source” installation is fully upgraded/updated, you could roll out this procedure.
The difference is that “old setup” is with 128Gb disk, new setup is with 500gb disk. Remember to delete all the partitions on 500gb disk before install NethServer from USB/DVD
Also, for the next support request, consider to fill the first post with more information. Not everyone could know or guess your current installation
