菜问题

版主您好；
我串口联好PC，打开电源，班子打在NOR,终端显示
##### Eboot for TQ2440/SKY2440 #####
#####     www.embedsky.net     #####

Microsoft Windows CE Bootloader for TQ2440/SKY2440 Version 2.4 Built Dec 10 2009

Press [ENTER] to launch image stored on boot media, or [SPACE] to enter boot monitor.

Initiating image launch in 0 seconds.
Launching image from boot media ...
OEMPlatformInit: IMAGE_TYPE_RAMIMAGE
+=OEMVerifyMemory+ dwStartAddr:0x80200000  dwLength:0x4
RAM image 0xa 0x80200003
+=OEMVerifyMemory+ dwStartAddr:0x8022c5ac  dwLength:0x4
RAM image 0xa 0x8022c5af
ERROR: ReadOSImageFromBootMedia: Failed to open existing partition.
OEMPlatformInit ERROR: Failed to load kernel region into RAM.
怎么回事啊
但是板子打在NAND,终端显示正确