i have an external hard drive that i want to use to scan infected computers with. is there a chance that a virus could be on a computer that could, upon detection of my hard drive, infect it. i want to be able to plug my external hdd back into my home computer without worrying if it's going to one day infect my computer. if there is a threat is there a protection that i could put in between the two? take into consideration that i would not be loading ANY files from other people's computers onto my external HDD under any circumstance. any help or advice would be appreciated.