>> Most of those ARM SBCs come with a µSD slot plus other things. >> Even if you connect a SATA disk, you'll often need a µSD because some >> of those SBCs don't have any on-board flash memory, so you need the µSD >> to hold the U-Boot (which plays the role of the BIOS) without which the >> board doesn't even know how to read from the SATA disk. > I see. Being able to replace the memory that holds the bootloader makes > perfect sense. That's even a feature I would pay extra for.
Yup: µSD cards tend to suck when compared to SATA devices, but when you compare them to on-board flash holding BIOS and other such read-only firmware, they rock! Stefan