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The original was posted on /r/homelab by /u/wegster on 2024-01-24 13:41:08+00:00.
Picked up a used M720Q specifically as I needed the PCI riser for a 4 lane gen3 card for work.
Let Windows do the round of updates to include Windows-initiated firmware update (don't have exact version at the moment, but it basically updated from 2019 BIOS to IIRC Nov 2023).
Picked up the 16x riser 01AJ940 per the master Tiny thread on servethehome. No joke on the max PCI card length in these - I had to remove the wifi card antenna bracket bit the card goes in snugly, I believe without any 'bad' interference, e.g. no heatsinks shorting to the mobo, etc.
First boot attempt it jumps into BIOS with a message on 'Insufficient PCI resources!' Then some claims about you can boot anyway, although for the life of me, there seems to be no path to force it to boot...
This wasn't entirely surprising as there are only so many PCIE lanes. I went ahead and disabled onboard SATA, wireless, bluetooth, even audio, although I doubt audio is using a PCI lane, but am still seeing the message, along with no seeming way to force the boot.
Long ago threads (not for the Tiny, usually for people trying to run multiple GPUs in larger systems) allude to something along the lines of disable CSM, and enable > 4GB, which I'm assuming is for part of the memory mapping or buffers for the PCI devices. There is an option around CSM, but nothing in BIOS I've been able to find around address space.
Am I missing something obvious?
- Is there an actual way to force the boot anyway (one that works)?
- Other options I may somehow have missed?