SDs and eMMC also usually have the same feature as the famous IBM “DeathStar” HDDs from the 00's: the thing gets completely hosed when it loses power when write

SDs and eMMC also usually have the same feature as the famous IBM “DeathStar” HDDs from the 00's: the thing gets completely hosed when it loses power when write is in progress. I do not have exact statistics but I believe that this is the most common failure mode of SD cards in embedded systems that we supply (but a friend who works for certain ARM and PowerPC SoC vendor told me that he has statistics that disprove my theory, so take that with a grain of salt).