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Create the USB stick
We have prepared the flash drive with Rufus by setting these parameters:
Once the writing is complete, open the isolinux.cfg file on the stick (E: boot Linux)
and modify it as follows and save:
APPEND initrd=/boot/initrd console=ttyS0,115200n8
APPEND initrd=/boot/initrd autoinstall console=ttyS0,115200n8
APPEND initrd=/boot/initrd noacpi nosmp console=ttyS0,115200n8
Connect the serial to your PC with speed 115200 n 8 1 (possibly use the program MobaxTerm for simplicity).
CONNECT ONLY NIC 1 (CLOSE TO SERIAL) IF YOU HAVE A DHCP IN YOUR NETWORK. OTHERWISE ALL CONNECTED NICS WILL BE CONFIGURED TO DEFAULT AS WAN AND WILL NOT BE ACCESSIBLE
Put the stick in the APU2 still off, and power it up to start the boot.
As soon as the boot starts it will ask you if you want to access the boot menu: yes.
Press F10, and choose the USB stick
The classic Kerio Control © installation will then start on the console output. Once finished, connect an ethernet cable to the central port and from the web go here: https://10.10.10.1:4081/admin to complete the installation from the graphical interface.
To enable the SSH (after installation is complete)
From the graphical interface of Kerio Control ©, hold SHIFT and go to system –> health status. The button: Enable SSH will appear
To enable the console boot output (once installation is complete)
For expert users: be careful because you could ruin the correct execution of the program.
We enable SSH in the console.
First we need to replace the partition with the write rights.
Then we change the speed from 9600 to 115200 (APU speed)
We modify the file as follows:
::sysinit:/usr/bin/run-parts2 -a start /etc/boxrc.d
::shutdown:/usr/bin/run-parts2 –reverse -a stop /etc/boxrc.d
tty2::respawn:/sbin/getty -L 115200 tty2
tty3::respawn:/sbin/getty -L 115200 tty3
ttyS0::respawn:/sbin/getty -L 115200 ttyS0
After the reboot we will have this screen on the console:
# OPTIONAL – ATTENTION, ONLY FOR EXPERIENCED USERS WHY CAN MAKE THE SYSTEM UNSTABLE #
We modify the boot to get all the output in serial.
First you need to get the file grub-mkconfig_lib (we used that of a Debian 8 Jessie). Then follow the commands below, after editing the file / usr / share / grub / default / grub as shown in the figure.
Before being able to give the upgrade-grub2 command, you must remount sda1 in rw