开机就显示,
The following file is missing or corrupred: .\HIMEM.SYS
The following file is missing or corrupted: .\IFSHLP.SYS
Microsoft(R) MS-DOS 7.1
(C)Copyringht Microsoft Corp 1981-1999
C:\>
我的本没有光驱，主板BIOS在DOS下不支持USB引导，而且DOS命令不能改变分区路径，比如输入C:\>CD D：回车，会显示不成功，我的本是DELL PP01S L400的机制，请DOS高手帮忙救一下
