MFGtools中的脚本中有如此一段
sfdisk --force -uM ${node} << EOF
${BOOT_ROM_SIZE},500,0c
600,,83
EOF
里面用到了sfdisk工具来进行文件系统的分区工作。在实际的开发中，主板上没有预留USB OTG，所以MFGtools工具无法使用。出现问题后重新烧写uboot和image以及文件系统时只能用串口。
实际搭建环境为：
- VMware虚拟机
- Ubuntu12.04
- 已搭建TFTP和NFS
将uboot.bin 和 uImage 及文件系统解压至Ubuntu系统的NFS文件夹中。将自己做好的烧写sh脚本放在NFS文件系统。首先要保证板子至少uboot好用，可以正常从NFS启动。
然后编译的是https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/v2.23/util-linux-2.23.1.tar.bz2
交叉编译链为arm-linux-gcc-4.6.3版本
配置命令为./configure --host=arm-linux CC=arm-linux-gcc --prefix=/home/xxx/util-linux-2.23.1/_install --without-ncurses
然后make 最后make install。
可能最后make install的时候会有错误，但sfdisk工具已经生成，复制到NFS中文件系统的sbin目录中，arm使用没有任何问题。
~ # sfdisk
Usage:
sfdisk [options] <device> [...]
Options:
-s, --show-size list size of a partition
-c, --id change or print partition Id
--change-id change Id
--print-id print Id
-l, --list list partitions of each device
-d, --dump idem, but in a format suitable for later input
-i, --increment number cylinders etc. from 1 instead of from 0
-u, --unit <letter> units to be used; <letter> can be one of
S (sectors), C (cylinders), B (blocks), or M (MB)
-1, --one-only reserved option that does nothing currently
-T, --list-types list the known partition types
-D, --DOS for DOS-compatibility: waste a little space
-E, --DOS-extended DOS extended partition compatibility
-R, --re-read make the kernel reread the partition table
-N <number> change only the partition with this <number>
-n do not actually write to disk
-O <file> save the sectors that will be overwritten to <file>
-I <file> restore sectors from <file>
-V, --verify check that the listed partitions are reasonable
-v, --version display version information and exit
-h, --help display this help text and exit
Dangerous options:
-f, --force disable all consistency checking
--no-reread do not check whether the partition is in use
-q, --quiet suppress warning messages
-L, --Linux do not complain about things irrelevant for Linux
-g, --show-geometry print the kernel's idea of the geometry
-G, --show-pt-geometry print geometry guessed from the partition table
-A, --activate[=<device>] activate bootable flag
-U, --unhide[=<dev>] set partition unhidden
-x, --show-extended also list extended partitions in the output,
or expect descriptors for them in the input
--leave-last do not allocate the last cylinder
--IBM same as --leave-last
--in-order partitions are in order
--not-in-order partitions are not in order
--inside-outer all logicals inside outermost extended
--not-inside-outer not all logicals inside outermost extended
--nested every partition is disjoint from all others
--chained like nested, but extended partitions may lie outside
--onesector partitions are mutually disjoint
Override the detected geometry using:
-C, --cylinders <number> set the number of cylinders to use
-H, --heads <number> set the number of heads to use
-S, --sectors <number> set the number of sectors to use