Topic: Installation problems on a Mikrotik Routerboard RB750UPr2
Sorry for the low-level query, but I'm quite stuck...
I've read most of the Mikrotik-related installation tutorials/instructions I could find on the web, and have a fairly good handle on what's supposed to happen, but I'm failing to get the initramfs to boot on the router. I'm using my arch linux laptop as a host, and have built the appropriate initramfs.elf file from the OpenWRT git repo (at least, I hope it's the appropriate one, I've picked the right targets). I run dnsmasq on my laptop, setting it up to assign the router's MAC an IP and to send it the boot image, assign my laptop's ethernet interface an IP address in the 192.168.1.* range, boot router with reset held down, and can see the router requesting an IP, and being sent the initramfs file.
Then... nothing. I continue holding down reset for a while, then let go. I switch the cable from port 1 to one of the other ports, and start pinging 192.168.1.1. I can hear the router making some noises, but it never responds. I thought maybe having DHCP servers running on both machines would create some conflict, so I killed dnsmasq on my laptop and tried again. Then removed the IP address from my laptop's eth0, thinking the router might assign me an IP, and tried again. Same results in all cases.
What else can I do? The router has no serial port and I'm not prepared to break out the soldering iron. Is there any way to get any more diagnostics?
The Mikrotik section of the downloads area for 15.05 doesn't include an initramfs.elf file, so I went back a version and tried using the initramfs I downloaded from there, thinking maybe that was built more "correctly", and it wouldn't matter which version I used for the intermediate boot. Same result.
I don't know what else I can try!