These settings are present in the master.ini file in $BPDIR/bpinit.
UseAlternateImage – By default this option is set to False. On some servers or specific hardware, the default image might experience problems during the boot. To work around this problem we have another set of drivers that can be used for booting. After setting this flag to True, recreate the media for the client. This option must be set to True if the client machine is a Compaq Server.
ForceCDBurn – If the server is configured for burning ISO images using the cdrecord package, then this option can be set to True. Enabling this option allows you to burn the image from the graphical Administrator Interface.
CdromDeviceID – This field specifies the SCSI ID of the CDROM drive. The ID can be obtained by running the command cdrecord -scanbus as a shell prompt. Our software determines the SCSI ID internally and defaults to this field if it cannot identify the drive.