echo $((16*1024*1024)) > /proc/sys/vm/dirty_background_bytes
echo $((48*1024*1024)) > /proc/sys/vm/dirty_bytes

echo 0 > /proc/sys/vm/dirty_background_bytes
echo 0 > /proc/sys/vm/dirty_bytes

cat /sys/block/sd**X**/device/max_sectors

vi /usr/lib/udev/rules.d/81-udisks_maxsect.rules

SUBSYSTEMS=="scsi", ATTR{max_sectors}=="240", ATTR{max_sectors}="32678"

fdisk -u /dev/sdh # make DOS compat off if on
mkfs.vfat /dev/sdh1 -n KINGSTON16G -s 128 **-R 4592*** and use *fsck.vfat -v /dev/sdh1

SUBSYSTEMS=="scsi", ATTR{max_sectors}=="240", ATTR{max_sectors}="2048"

$ strace -o cp1.log cp -r /path/to/dir1 /path/to/usb/.

$ strace -o cp2.log cp -r /path/to/dir2 /path/to/usb/.