@GDen: that's interesting, but I have tried a 16GB card without success, so I suspect that there is more to this problem than card capacity. Maybe.

I've had a chance do some more testing but, like most of you, I get only as far as the Grey Screen of Death. I've tried two cards, with the GPT boot partition created on linux, and the remaining partitions created on the X23. Last night I submitted a _very_ detailed bug report to Volla. Haven't hear...

Thank you all for your help and insights; as a first-time poster, I'm pleasantly surprised to get so many replies so quickly. Time is short at the moment, and I hope to do some more testing early next week; meanwhile... @franco_bez: Thanks, at least I know that success is possible and that I'm not o...

After upgrading my X23 to VollaOS 12 (12-20230911-STABLE-vidofnir), I followed the instructions at https://volla.online/en/faqs/ "How can I install another operating system?" (and, for lack of X23-specific instructions, ignoring the warning in the first line). It seems that Ubuntu is succe...