This is possibly related to the initial burning of the DVDs. Even though burning the data DVDs completes successfully, a burned DVD could not be read by the BIOS to see if it was a startup disc. I learned this after leaving a disc in the drive by accident when restarting. The drive made strange noises and the computer would not boot. After a while, I had to manually eject the disc to allow the boot-up process to continue. This happened before grub loaded. I think it was when the BIOS was trying to check for a boot disc in the drive.
I hope this information helps to narrow down the problem. The DVDs still work normally in my PS3 and I can sometimes get them to work on the desktop computer where they were originally burned. -- DVDs will not Mount: No medium found https://bugs.launchpad.net/bugs/311479 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
