Serial port (COM1) - stages of operation.
Please explain to knowledgeable people at what stage data output to the serial port begins.
When loading the 1.03b loader (for DS3617xs or for DS3615xs), it comes to the standard screen about successful loading. The flash drive flashes a little more and everything stops there. No data is output to the serial port. Not a single letter. I'm wondering if the bootloader doesn't find the network card, should it output to the serial port? Or, if there are problems with the network, no data
VM XPE supports virtual serial port, so you can easily debug logs.
I've heard that on baremetal there is no way to check unless you connect a cable to the physical serial port.
So, the problem that has been frustrating for so long has now been solved.
Since there are almost no COM1 / COM2 serial ports on the new main board unless it is an industrial / server board.
You have no choice but to use a USB-SERIAL converter cable.
1. In my case, the client respons