I tried to burn something on my DVD+R DL, but there was an error and it said "The attempt to burn a disc failed. The device failed to respond properly. Unable to recover or retry." I tried to erase the disk, but Disk Utility says that there are "No devices available for erasing." Before, disk didn't come up as anything, but now it is "disk2s3" and it is unreadable by the computer, but still shows up. It's making me confused, because on top of that, SimplyBurns also says that the disk usage is 7.24GB of 7.23GB. Please help me!