Linux移植问题

我采用  TQ2440_CD\出厂烧录镜像合集\天嵌4.3寸屏的镜像  里面UBOOT ZIMAGE
重新编译了一次root_qtopia_2.2.0_2.6.30.4_20100601.tar后下载root文件，
出现下面问题：
#####    Boot for Nor Flash Main Menu   #####
#####     EmbedSky USB download mode     #####

[1] Download u-boot or STEPLDR.nb1 or other bootloader to Nand Flash
[2] Download Eboot (eboot.nb0) to Nand Flash
[3] Download Linux Kernel (zImage.bin) to Nand Flash
[5] Download CRAMFS image to Nand Flash
[6] Download YAFFS image (root.bin) to Nand Flash
[7] Download Program (uCOS-II or TQ2440_Test) to SDRAM and Run it
[8] Boot the system
[9] Format the Nand Flash
[0] Set the boot parameters
[a] Download User Program (eg: uCOS-II or TQ2440_Test)
[b] Download LOGO Picture (.bin) to Nand  Flash
[l] Set LCD Parameters
[n] Enter TFTP download mode menu
[o] Download u-boot to Nor Flash
[r] Reboot u-boot
[t] Test Linux Image (zImage)
[q] quit from menu
Enter your selection: 6
USB host is connected. Waiting a download.

Now, Downloading [ADDRESS:30000000h,TOTAL:46401706]
RECEIVED FILE SIZE:46401706 (697KB/S, 65S)

NAND erase: device 0 offset 0x500000, size 0xfb00000
Skipping bad block at  0x01920000                                            
Skipping bad block at  0x01b60000                                            
Skipping bad block at  0x03340000                                            
Skipping bad block at  0x03ca0000                                            
Skipping bad block at  0x04260000                                            
Skipping bad block at  0x098a0000                                            
Skipping bad block at  0x0a3e0000                                            
Skipping bad block at  0x0dac0000                                            
Erasing at 0xffe0000 -- 100% complete.
OK

NAND write: device 0 offset 0x500000, size 0x2c408a0
Input block length is not page aligned
Data did not fit into device, due to bad blocks
46401696 bytes written: ERROR

这个是什么原因？

没遇到过，先[9] Format the Nand Flash试试？重新烧u-boot，zImage，root试试。我也刚学。。。