The I/O errors, the "automount: inserted" message, the fact that it shows up on ext3 and ext4, makes it smell very much like a hardware problem (or possibly a mmc device driver problem). It could be caused by a fake mmc card that (if you bought it from a street vendor or some the micro center discount bin at the checkout counter, try getting a brand name flash from a reputable source --- you get what you pay for). It could be caused by flaky hardware, or a MMC drive; it could be caused by an MMC driver problem. It doesn't seem like it's a file system problem. Regards, - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html