假設apache和mysql都安裝在非系統硬碟上，重裝windows，apache、mysql當然都不能啟動了。不甘心傻乎乎的用安裝檔案
重新安裝，開源軟體一般不使用windows自己的COM等組件，安裝不用做複雜的註冊表操作，只要將它們的主程式註冊為windows的服務就可以
了，windows的sc命令可以協助我們完成這個工作，格式是這樣的:sc create apache binPath="D:/apache2/bin/httpd.exe"把D:/apache2/bin/httpd.exe註冊為名為apache的服務。不過呢，apache和mysql自身就有註冊成windows服務的功能，嘿嘿！D:/Apache2/bin>httpd /?
Usage: httpd [-D name] [-d directory] [-f file]
[-C "directive"] [-c "directive"]
[-w] [-k start|restart|stop|shutdown]
[-k install|config|uninstall] [-n service_name]
[-v] [-V] [-h] [-l] [-L] [-t] [-S]
Options:
-D name : define a name for use in <IfDefine name> directives
-d directory : specify an alternate initial ServerRoot
-f file : specify an alternate ServerConfigFile
-C "directive" : process directive before reading config files
-c "directive" : process directive after reading config files
-n name : set service name and use its ServerConfigFile
-k start : tell Apache to start
-k restart : tell running Apache to do a graceful restart
-k stop|shutdown : tell running Apache to shutdown
-k install : install an Apache service
-k config : change startup Options of an Apache service
-k uninstall : uninstall an Apache service
-w : hold open the console window on error
-e level : show startup errors of level (see LogLevel)
-E file : log startup errors to file
-v : show version number
-V : show compile settings
-h : list available command line options (this page)
-l : list compiled in modules
-L : list available configuration directives
-t -D DUMP_VHOSTS : show parsed settings (currently only vhost settings)
-S : a synonym for -t -D DUMP_VHOSTS
-t -D DUMP_MODULES : show all loaded modules
-M : a synonym for -t -D DUMP_MODULES
-t : run syntax check for config filesD:/Apache2/bin>根據協助資訊，執行D:/Apache2/bin/httpd.exe -k installapache就註冊成為windows的服務了，用D:/Apache2/bin/net start apache2.2
