Hello,

I have a server somewhere in the overseas office where I need to Install RouterOS 7. It has Ubuntu 22.04 currently.
I wonder if there is a method which I can use and do an unattended installation? I have no KVM there unfortunately.

I downloaded install-image-7.11.2.zip, mounted and can see:

I'd populated autorun.scr file (seems like it is being used when the first boo happens). Firstly I'd tried at the test PC I have near me and when I dd the prepared image - it still wants me to press the buttons in order to finish the process.

Maybe I need to create some other answers file or to specify smth inside CHOOSE file I can see inside the image too?

It's better to do install locally in a VM (use same size/type of virtual disk as later in real machine) then after setup finishes, shut it down and DD the disk contents to a real machine disk.
It should boot and even without any special autorun.scr it should be accessible over LAN for further configuration. Again you can test everything in a VM to see what will happen when it boots...

It's better to do install locally in a VM (use same size/type of virtual disk as later in real machine) then after setup finishes, shut it down and DD the disk contents to a real machine disk.
It should boot and even without any special autorun.scr it should be accessible over LAN for further configuration. Again you can test everything in a VM to see what will happen when it boots...

Problem is that the overseas guys are not very technician. Right now I have an SSH port forwarding to the server which should become a router and the server should be available at the same IP address as it has now, so I really do need autorun.scr which creates me the correct configuration.

It's better to do install locally in a VM (use same size/type of virtual disk as later in real machine) then after setup finishes, shut it down and DD the disk contents to a real machine disk.
It should boot and even without any special autorun.scr it should be accessible over LAN for further configuration. Again you can test everything in a VM to see what will happen when it boots...

The interesting thing: I'd just compared the disk which I had afrer the install from install-image-7.11.2.zip (x86 distro) and chr-7.11.2.img.zip. Everything is the same (compared by the checksums), but the only file which is different is (part2)/nova/etc/serial.

It looks like the CHR image does not have anything related to the serial numbers. I'd compared first 1024 bytes of both disks and there is a serial number (10 bytes) at the offset 0x0000100 + 2 other bytes (checksum? signature?) is available at the disk which was created by the installer.

So... The MBRs of CHR and x86 differ:
1. At 0x00000100 there are 12 bytes of serial+something. 10 bytes of serial itself (the value without newline) is a hex (just text string) locates in ${ROS_DIR}/nova/etc/serial
2. At 0x00000150 CHR has 01, x68 has 00
3 At 0x000001db There are 2 bytes.. x86 has 8F08

In my case it was to patch CHR image and generate proper autorun.scr file.