Alright, so i have been trying to delete all of the data off of my old computer's hard drive so i can give it to one of my family members. I have burned dban to four different DVD+r disks already and none of them seem to boot. I already set my boot device to the optical drive, turned off secure boot, and I've even checked the boot menu, but it never shows up. Also, I've checked the DVD+r's to see if they were burned correctly, and they all are. The old computer is an Acer Aspire 603g uw14