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DOS疑难解答 & 问题讨论（解答室） » A question for you, and I hope to get your answer

Floor1　风之吻	Posted 2003-01-20 00:00
初级用户　Posts 2　Credits 108
Hello, expert: I'll skip the polite talk. I have a question for you and hope to get your answer. I made a boot disk (USB flash drive), and I want to make a batch file in it. After this batch file runs, a selection menu appears; after choosing the corresponding item, it executes the corresponding program. How should I write it? Appendix @echo off path=%RAMD%:\;a:\;%CDROM%:\ cls echo 1 dm echo 2 diskgen echo 0 quit echo Please choose choice/c IF ERRORLEVEL 0 goto QUIT IF ERRORLEVEL 1 goto 1 IF ERRORLEVEL 2 goto 2 goto QUIT ================It always gives an error here. :1 path=a:\DM\ a:\DM\DM.com goto QUIT :2 path=a:\diskgen\ a:\diskgen\diskgen.exe goto QUIT :QUIT echo.

Floor2　wqqqing	Posted 2003-01-20 00:00
初级用户　Posts 7　Credits 119
Hehe, this is a problem with the IF ERRORLEVEL statement. You should judge starting from the larger one. Specifically: IF ERRORLEVEL 2 goto 2 IF ERRORLEVEL 1 goto 1 IF ERRORLEVEL 0 goto QUIT ...... Or, after selecting the corresponding data, set an environment variable, and then use: IF %environment variable%=="" to execute the corresponding program.

Floor4　ko20010214	Posted 2003-07-04 00:00
版主　Posts 1,628　Credits 7,296
Learn how to ask questions first. Make your post title better. For posts with this kind of title, there may only be these three outcomes in the future: 1。Nobody will respond. (This is the best-case scenario.) 2。It gets moved to the off-topic section. 3。It gets deleted.