I was reading a rather disappointing blog [www.tfw8b.com] about how TFW8b is going to be closing down EU and USA shipments because of regulatory requirements, when I found another article of interest:
https://www.tfw8b.com/the-end-of-the-sd-card-line/
Read it. It is a nice explanation of why not all SD cards are the same, and why some cards have compatibility issues.
Some people might have wondered why I made the decision to avoid using raw SD card access in my Kestrel-3 project; this is exactly why. These days, it is better to make intelligent storage devices (like how Commodore and Atari used to) than to assume the benevolence of a storage protocol will remain forever.
In fact, assume it won't. Modern SD protocols are horribly mired in all manner of hardware and encryption related bullshido that I will go out of my way to build battery-backed RAM Disks before I ever consider willfully using the SD protocols ever again.
@vertigo huh, the 128GB micro SD I put in my flipper zero because it was the first one I could find worked fine, and that device definitely only uses the legacy SPI mode.
@cinebox what kind of SD card is it? I'm willing to guess a SanDisk SDHC type card?
@vertigo it’s an SDXC