I dumped my nand partially with 4 gb sd card as 30 files and my (last rawnand.bin file) rawnand.bin.29 was just only 120 mb, while the others were 1 gb. I collected them all with the file joiner, it didn't give any errors but my rawnand.bin total size is just 30.5 gb. I read about it is supposed to be about 32 gb. So what did I wrong? Or the is the whole process correct?