OS 10.7.2 thinks Data DVD is blank, but it isn't!

Hi BeanCurdNerd

I'm having the same issue. I transfer over the UDF.kext from a 10.6 machine but still fails.

Did you find a workaround ?

Cheers

Rikky

I have found workaround, it seems to be an issue with the 64-bit Kernel and Extensions. I got it working by restarting the machine and forcing it into 32-bit mode (Hold down 32 on start up) when you restart the machine it will default back to 64-bit.

Cheers

Rikky

Thanks, I have the same problem. I've been searching for an answer and found your post. Restarting in 32 bit mode works for me. Wish there was a better solution : /

Hoping it will be fixed in 10.7.3 update.

You can permanently put the Mac into 32-bit mode by run the following command in terminal:

sudo systemsetup -setkernelbootarchitecture i368

If you would like to change back to 64-bit mode change i386 to x86_64

Thank you! Starting in 32-bit mode saved our bacon.

I have a Mac Mini (Fall 2010) which I bought in 2011. I just tried the DVD last week,and it doesn't work. Im trying to burn image to DVD and nothing happens.

Ive tried Disk Utility, the New Burn Folder feature, Toast, and other programs. The optical drive is just dead. WHen I first bought my computer they came back to me and said that the one I bought didnt work, and gave me a new one. Seems this was part of the same scheme.

There are many different ways to burn, and many different kinds of files, so it can seem difficult, however, the disk utility and the New Burn Folder are easy, but nothing works. The drive just spins, holds it for minutes, and then spits it out, or doesnt, and only rebooting and holding the Eject Button, or the Mouse button down, works to eject the disk.

Solutions may have worked for people wanting to burn Music, but that's not what I want to do. In addition, this has nothing to do with the brand of DVD-RW we use, or not, I've tried over 5, and others have tried all the other versions.

Likewise, Im running 1.6.8 and not Lion, but Lion people are having problems also.

Of course my warranty is over, and I never tried burning DVDs before this.

Do we have to start a Save our Systems movement to get notice, camped out in front of the Genius stores? Im sorry, but Im tired of dishing out money for what appears to be really inferior products. My friends Mac Pro actually exploded! My last HD died. My computer before that also had to be replaced. What gives? Maybe it really is the fact that Apple products are being made in China, and we, the consumers, are paying the price, literally and figuratively.

If this works you should get the Mac Genius of the Year Award, and get a store all of your own. : )

Danke!

Glad i can help 🙂 Let me know if doesn't work on 10.6

Rikky, are there any differences in performance when you run in 32-bit mode verses 64-bit mode. it seems like this is the issue my employee is having when trying to burn and read DVD-R.

Restarting in 32 bit resolved my problem!! Thanks!!

Good to hear Jackson 🙂 Yes Melcool2, different kernel extenstions are loaded.

I believe its intentional not a glitch its affecting all latest updates. Im on 10.6.8. 6 months ago i installed win7 bootcamp to day tried to reformat the drive and reinstall and not only that i cant see the win7 files i cant even use bootcamp as aparently my machine does not support it and it did 2weeks ago - i was using bootcamp in 64 bit no problem go figure.

forcing it into 32-bit mode (Hold down 32 on start up) when you restart the machine

Dude, that did it!! Awesome! Thank you!!

Thank you thank you - this helped me too. Quick question to anyone who can answer, the next time I restart my computer will it still be in 32 bit or will it revert back to 64. I'm not very technical and I don't know if I need to do anything to change it back.

Thanks

"Your Mac will revert to the default kernel the next time you reboot it."

You don't have to do anything but restart to switch back.