That screen is a sign that your SSD holding Roon and the Roon Operating System is failing. It will need to be replaced.
I see that your Nucleus is now outside of the 2-year warranty period, so your best approach would be to purchase a new SSD to replace the existing SSD and install ROCK onto it. Start from step #3 in this guide:
Note that you’ll need to plug in a keyboard into the Nucleus to boot from USB.
Once you are up and running again, contact @support and they will arrange to have the ROCK version of Roon OS replaced with the Nucleus version - they can do this remotely.
Thanks, Wes. I’m now studying up on the M.2 replacement. I see community posts regarding M.2 SSD upgrades and brand alternatives to the Transcend TS128. Can you recommend a proper brand and model to use?
I’ll chip in here @brad_thompson and recommend Samsung, just very fast and reliable though not the cheapest. Other companies make some decent models but it’s a bit of a lottery. Never had a Samsung SSD fail on me in 10 years or more of using them.
Update on Nucleus recovery: I’ve replaced the original M.2 SSD with a Samsung and it appears to be seated properly and recognized. I’m now attempting to flash the SSD with the ROCK factory reset image (roonbox-linuxx64-nuc4-usb-factoryreset.img.gz). Unfortunately, I’m stalled at the “Reboot” command. Any ideas? (the disk info screenshots are of the USB stick I’m using to transfer)
@brad_thompson are you selecting the USB stick to boot from on the initial screen for sure? Press the down arrow key to highlight the line starting USB : Generic Flash Disk 8.07… and then press return.
So I’ve never flashed ROCK myself, but I still suspect something’s wrong with your USB prep. You shouldn’t have to format the stick at all, Etcher should do that for you and set up the appropriate boot sector. Could you share screenshots of the Etcher steps please, that’s the key part.