# Under Linux, with eMMC as /dev/mmcblk0 # NVRAM starts at hex 0xA40000 (decimal 10747904), size 0x460000 (4587520 bytes) dd if=/dev/mmcblk0 of=nvram.bin bs=512 skip=20992 count=8960 # (skip = 0xA40000 / 512 = 20992, count = size/512)
The starting point on the memory chip where the data is written.