我做了下面五步的工作:
1、添加Catalog->Core OS->Windows CE devices->Core OS Services->USB Host Support->USB Storage Class Driver
2、添加Catalog->Core OS->Windows CE devices->Core OS Services->File Systems and Data Store->Storage Manager->FAT File System
3、添加Catalog->Core OS->Windows CE devices->Device Drivers->USB Function->USB Function Bus Drivers->Netchip NET2280 USB Function
4、添加Catalog->Core OS->Windows CE devices->Device Drivers->USB Function->USB Function Clients->Mass Storage
5、添加Catalog->Core OS->Windows CE devices->Device Drivers->USB Host->USB Host Controllers->OHCI