I'm running a 27" iMac from 2010, and I just recently installed Mountain Lion (10.8.5). On Snow Leopard, I had a Windows 7 partition that I had installed from a burned DVD, and everything was working fine. But I had to reformat the HDD to install ML, and so now I'm looking to reinstall a Windows 7 partition.
First off, I think my Superdrive is failing. I insert the DVD I used to install windows before, and it just whirs away for a few seconds and then spits it back out. When I try and re-burn the original .ISO file to a new DVD at max speed, it gives me a "burn failed because of a medium write error". When I try and re-burn it on the slowest speed, it starts successfully, and then when "finishing" it spits the disk out (instead of mounting the image) and says "burn failed because of a medium write error" again.
However, I have an external DVD drive. So when I tried going through the Bootcamp Assistant, it recognized the disc on this drive, and everything seemed to be going fine. It got the partition set up, and restarted the computer as it should. However, when it came time to reboot, I got a black screen with "NO BOOTABLE DEVICE -- INSERT BOOT DISK AND PRESS ANY KEY". Am I right in assuming that this is because the OS doesn't know to scan my external DVD drive upon booting up?
After I manually rebooted, erased the failed Windows partition, and rejoined the empty space to my Mac partition, I tried this: https://www.youtube.com/watch?v=KmHxkahbK-g
Because I'm on Mountain Lion, there isn't any native support in Bootcamp for creating a bootable USB Windows install. So as the video suggests, I edited the .plist file, and made a USB bootstick from there. However, when Bootcamp rebooted this time, I still got the same error. Even when I manually rebooted and held down the option key, it didn't recognize my USB stick.
My question is a two-parter:
(1) How can I verify that my Superdrive is failing, and if it is indeed, can I get it replaced? Mind you this computer is almost 6 years old now.
(2) This user had the same problem, except they eventually got their Superdrive to read the disc: Unable to install Windows via Bootcamp without superdrive (mountain lion)
Can anyone else offer some alternative suggestions? I don't have much faith that I'm going to get my DVD to stay in the Superdrive. Is there some other way I can have it recognize my external DVD upon rebooting?
Thanks in advance!