串口驱动错误

我用TQ2440的开发板，下载下自己编译的linux内核和文件系统，下载下去后控制台打印以下文字并且过一段时间重启，请问一下楼主是什么原因啊？谢谢！！
我检查了一下串口的驱动，和天嵌科技出品-Linux移植之Step By Step_V4.2_20100125.pdf中介绍的完全一样。
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
Partially written block 139 detected
yaffs_read_super: isCheckpointed 0
VFS: Mounted root (yaffs filesystem) on device 31:2.
Freeing init memory: 180K
cannot run '/etc/init.d/rcS': No such file or director

can't open /dev/tty2: No such file or director
can't open /dev/tty3: No such file or director
can't open /dev/tty4: No such file or director
can't open /dev/tty2: No such file or director
can't open /dev/tty4: No such file or director
can't open /dev/tty3: No such file or director
can't open /dev/tty2: No such file or director
can't open /dev/tty3: No such file or director
can't open /dev/tty4: No such file or director
can't open /dev/tty2: No such file or director
can't open /dev/tty3: No such file or director
can't open /dev/tty4: No such file or director
can't open /dev/tty2: No such file or director
can't open /dev/tty3: No such file or director
can't open /dev/tty4: No such file or director

下载了光盘里的root文件（root_qtopia_2.2.0_2.6.30.4_256MB_20091216）就正常了，
制作文件系统时:mdev -s 这个命令不能执行

制作文件系统时:mdev -s 这个命令不能执行
1、想问一下你在PC上面执行的这个指令还是开发板端执行的？
2、编译busybox的编译器和编译zImage的编译器和文件系统lib目录下的库文件用的编译器相同吗？

是在PC机上（虚拟机）执行的这个命令，编译器和编译zImage的编译器是相同的。

mdev -s这条语句是在开发板上面运行。在天嵌科技提供的Linux移植手册里面只要写了mdev -s这条语句都是讲的针对开发板的，没有任何地方说了这句话要在PC上面执行。不知道你从哪里看到要在PC上执行。

嵌科技出品-Linux移植[img][img][img][/img][/img][/img]之Step By Step_V4.2_20100125.pdf的45页。

红色的字体

TQ2440的Linux移植手册V4.2版本的45页讲的是在开发板的文件系统的etc/init.d/rcS文件中要添加的内容啊。也没有说要在PC上运行这个命令啊。你应该是理解错了，是在Linux新建一个文本文件，然后输入手册里面的内容。保存名称为：rcS，权限设置为可执行。

VFS: Mounted root (yaffs filesystem) on device 31:2.
Freeing init memory: 180K
cannot run '/etc/init.d/rcS': No such file or director

can't open /dev/tty2: No such file or director
can't open /dev/tty3: No such file or director
can't open /dev/tty4: No such file or director
can't open /dev/tty2: No such file or director
can't open /dev/tty4: No such file or director
你这个问题是怎么样解决的呀