/list = This option will list every entry in the boot list in the boot.ini file.
bootcfg /scan
/scan = Using this option will instruct bootcfg to scan all drives for installations of Windows and then display the results.
bootcfg /rebuild
/rebuild = This option will step you through the process of rebuilding the boot.ini file.
bootcfg /default
/default = the /default switch sets the default boot entry in the boot.ini file.
bootcfg /add
/add = This option allows for the manual entry of a Windows installation in the boot.ini boot list.
bootcfg /rebuild
In the above example, the bootcfg command scans all drives for any Windows installations, displays the results, and steps you through building the boot.ini file.