sudo gainroot sfdisk -d --no-reread /dev/mmcblk0 < table.txt
echo "unit: sectors > /dev/mmcblk0p1 : start= 64, size= 4194304, Id=c > /dev/mmcblk0p2 : start= 4194368, size= 56631296, Id=83 > /dev/mmcblk0p3 : start= 60825664, size= 1572864, Id=82 > /dev/mmcblk0p4 : start= 0, size= 0, Id= 0" > table_new sfdisk -d --no-reread /dev/mmcblk0 < table_new