解决WinCE下的Windows目录文件不丢失的问题

1.将RAM and ROM File System模式改成ROM-only File System.
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编译遇到问题

BUILD: [01:0000006538:PROGC ] Linking D:\WINCE600\platform\SMDKV210\target\ARMV4I\retail\pm.dll

BUILD: [00:0000006562:WARNN ] D:\WINCE600\PLATFORM\SMDKV210\SRC\OAL\OALEXE\: Missing source file: D:\WINCE600\platform\SMDKV210\lib\ARMV4I\retail\SDMMClib_OAL.lib.

BUILD: [00:0000006572:PROGC ] Building LINK Pass in D:\WINCE600\PLATFORM\SMDKV210\SRC\OAL\OALEXE\ directory.

BUILD: [01:0000006583:ERRORE] NMAKE :  U1073: don't know how to make 'D:\WINCE600\platform\SMDKV210\lib\ARMV4I\retail\ SDMMClib_OAL.lib'

BUILD: [01:0000006585:ERRORE] NMAKE.EXE TargetExeFiles  -i -c BUILDMSG=Stop.  BUILDROOT=D:\WINCE600\PLATFORM\SMDKV210 CLEANBUILD=1 LINKONLY=1 NOPASS0=1 failed - rc = 2

BUILD: [00:0000006586:PROGC ]                        Files  Warnings  Errors