Pine A64+ won't boot?

[g_t_j]

Hm, well, that's something I hadn't thought of.  Is there a list of verified working micro SD cards?

There are two things to take care of when it's about SD cards:

a) an enormous amount of fake SD cards exists (less real capacity or simply fraud)

b) random I/O matters therefore don't only look at the 'speed class' but rely on real tests that measured also random I/O. Using the wrong card will result in the Pine64 behave sluggish or not

That's why we (Armbian team) recommend the following: https://github.com/igorpecovnik/lib/blob...re-sd-card

That's brilliant stuff. Thanks for posting.

I got 3 of those Sandisk Extreme U3s so I'm lucky enough having the 2nd best according to that test. 
I'll be buying a Samsung EVO+ at some point to try it as well.