For SSD, I'd imagine you might get SMART data or something similar? I know that on Linux, there are mmc-utils, but I only used those with eMMC so far. I just

For SSD, I'd imagine you might get SMART data or something similar? I know that on Linux, there are mmc-utils, but I only used those with eMMC so far. I just tried to read out some general status information on uSD cards I have around: it didn't work for 2 Kingston and Acon cards (command timeout). But for a Swissbit card (industrial), it took some solid 10 seconds before reporting back that it's doing ok and is ready for data. Looks like it depends heavily on vendor support, possibly also undocumented/non-standard command sequences?