On 2020-06-22, Neil Bothwick <n...@digimed.co.uk> wrote: > I'd run sync as well, just to be sure, although umount shouldn't return > until everything is flushed to the card.
I suppose it's possible that the data _had_ been flushed to the card, but was still the card's write buffers and had not been committed to flash when the card was pulled. One would hope that SD cards have sync write commands and those commands would be used by the umount code... -- Grant
