Hello, I’m also having a lot of trouble installing the original image from Zynthian. First I tried a 256GB Lenovo. That didn’t work. I tried using the original Pi imager. I kept getting a 99% verification error. Then I tried a 64GB Sandisk Extreme. But that also got a 99% verification error.
Later, I tried a standard Pi OS image from the Pi image program itself, which worked fine.
It booted fine.
On a Pi 4b 8Gb.
Who knows what to do?
Just to be sure, I ordered a 64GB Sandisk S2 Extreme.