Hi,
How to make Virus Scan Bootable CD so i will be scan latest virus defination in Safe mode.
How To Use the Symantec Endpoint Recovery Tool with the Latest Virus Definitions
http://www.symantec.com/business/support/index?page=content&id=TECH131732
How to make the Symantec Endpoint Recovery Tool boot from a USB memory stick
http://www.symantec.com/business/support/index?page=content&id=TECH131578
Does Symantec Endpoint Protection scan the boot sector of USB drives?
http://www.symantec.com/business/support/index?page=content&id=HOWTO77612
Check this thread
https://www-secure.symantec.com/connect/forums/bootable-cd-sep-or-support-tool
https://www-secure.symantec.com/connect/forums/symantec-endpoint-protection-ver-11x-emergency-cd
Find the attach forum
https://www-secure.symantec.com/connect/forums/how-do-i-make-boot-cd-use-scanning-infected-hard-drive
Helpful Information :)