求助wince烧写操作系统时出错

我在烧写wince5.0操作系统后，DNW串口信息
Download BIN file information:
-----------------------------------------------------
[0]: Base Address=0x80200000  Length=0x18fd4fc
-----------------------------------------------------
RAM image
rom_offset=0x0.
ROMHDR at Address 80200044h
Writing single region/multi-region update, dwBINFSPartLength: 26203388
IsValidMBR: MBR sector = 0x400
OpenPartition: Partition Exists=0x0 for part 0x21.
CreatePartition: Enter CreatePartition for 0x21.
LastLogSector: Last log sector is: 0xff.
CreatePartition: sectors [0x500, 0xc800] requested are out of range or taken by another partition
ERROR: WriteOSImageToBootMedia: Failed to open/create partition.
ERROR: OEMLaunch: Failed to store image to Smart Media.
ERROR: OEMLaunch: Halting...
SpinForever...


然后我想格式化，却又出现了下面的信息
ARNING:Do you really want to continue ?
press 'Y' to continue,press 'N'  to cancel !
Enter FastLowLevelFormat [0x4, 0x3ff].
Fast Format: found a bad block (0x5) - skipping...
Fast Format: found a bad block (0x6) - skipping...
Fast Format: found a bad block (0x7) - skipping...
Fast Format: found a bad block (0x8) - skipping...
Fast Format: found a bad block (0x9) - skipping...
Fast Format: found a bad block (0xa) - skipping...
Fast Format: found a bad block (0xb) - skipping...
Fast Format: found a bad block (0xc) - skipping...
Fast Format: found a bad block (0xd) - skipping...
Fast Format: found a bad block (0xe) - skipping...
Fast Format: found a bad block (0xf) - skipping...
Fast Format: found a bad block (0x10) - skipping...
Fast Format: found a bad block (0x11) - skipping...
Fast Format: found a bad block (0x12) - skipping...
Fast Format: found a bad block (0x13) - skipping...
Fast Format: found a bad block (0x14) - skipping...
Fast Format: found a bad block (0x15) - skipping...
Fast Format: found a bad block (0x16) - skipping...
Fast Format: found a bad block (0x17) - skipping...
Fast Format: found a bad block (0x18) - skipping...
Fast Format: found a bad block (0x19) - skipping...
......
Fast Format: found a bad block (0x3fb) - skipping...
Fast Format: found a bad block (0x3fc) - skipping...
Fast Format: found a bad block (0x3fd) - skipping...
Fast Format: found a bad block (0x3fe) - skipping...
Fast Format: found a bad block (0x3ff) - skipping...
Fast Format: ...erase complete.
WriteMBR: MBR block = 0x4.
BP_FastLowLevelFormat: Done.
哪位大神能看下是怎么回事啊

是不是之前没有过格式化过nand？