Dear All,
I will add an Pci-e 8 port serial card. So with my motherboard, this will do 9 serial ports 
How can I add permanently a /dev/ttyS8 ?
I’ve made in a command shell:
mknod -m 666 /dev/ttyS8 c 4 72
thus a new /dev/ttyS8 comes up but it disappear at next reboot !!!
Thx for help
Hervé