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

I have a brand new Macbook Pro and I've encountered a baffling problem.  A data DVD (containing multiple PDF's) shows up as a blank writable disc on this computer.  I decided to run Parallels with Windows 7 (on the same MBP) and the disc showed up with all the files intact.  So I figured it wasn't a hardware problem.  Then I tried the same DVD in my older macbook (2008 model) and Mac Pro desktop (both with OS 10.6) and the disc works perfectly.  So it's not a general mac problem either, it appears to be a 10.7 Lion problem.  I then uninstalled Parallels and Toast just incase they were to blame...no luck.  I have tried other data DVD's in my new MBP and they work perfectly, so I tried to figure out what format was messing with Lion.  Using Snow Leopard, Toast & my old Macbook here are my findings regarding the format of the culprit DVD:
Medium Type: DVD-R
Space used: 4.38 GB
Diameter: 120 mm
Layers: single
Manufacturer ID: RITEKF1
Content:
Title: Feb 22 2011
Content Type: Data
File System: UDF
Tracks: 2
Sessions: 2
Details:
Session 1 Start=0, Size 1.16GB
Track 1 Start=0, Size 1.16 GB
UDF  Feb 22 2011
UDF revision 2.01
Session 2 (open), Start= 645216, Size = open
Track 2 Start = 645216, Size = 3.15 GB
UDF  Feb 22 2011
UDF revision 2.01
So as you can see it's a mutisession DVD, which you cannot create under Lion but you should be able to read it.  It's also UDF format, etc.  Does anything else look fishy?
Anyway, I brought the MBP to the genius bar today and showed him my findings.  I tried the disc in his MBP and it also apperaed to be a blank writable DVD. He believes it is a Lion bug and had nothing more to say.  Any thoughts from the techies out there?  Anyone have a similar experience?  I would love to have my results duplicated so that I can make apple aware of this bug.  Thanks all!
My specs:
MBP 2.2 GHz Intel Core i7
8 GB 1333 MHz DDR3
OS 10.7.2

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.

Similar Messages

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    I have a brand new Macbook Pro and I've encountered a baffling problem.  A data DVD (containing multiple PDF's) shows up as a blank writable disc on this computer.  I decided to run Parallels with Windows 7 (on the same MBP) and the disc showed up with all the files intact.  So I figured it wasn't a hardware problem.  Then I tried the same DVD in my older macbook (2008 model) and Mac Pro desktop (both with OS 10.6) and the disc works perfectly.  So it's not a general mac problem either, it appears to be a 10.7 Lion problem.  I then uninstalled Parallels and Toast just incase they were to blame...no luck.  I have tried other data DVD's in my new MBP and they work perfectly, so I tried to figure out what format was messing with Lion.  Using Snow Leopard, Toast & my old Macbook here are my findings regarding the format of the culprit DVD:
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    Manufacturer ID: RITEKF1
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    Title: Feb 22 2011
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    Anyway, I brought the MBP to the genius bar today and showed him my findings.  I tried the disc in his MBP and it also appeared to be a blank writable DVD. He believes it is a Lion bug and had nothing more to say.  Any thoughts from the techies out there?  Anyone have a similar experience?  I would love to have my results duplicated so that I can make apple aware of this bug.  Thanks all!
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    Cattus Thraex,
    I know that you enjoy posting on the forums, but please only post relevant information.  If you've read everyones post in this thread you'll notice that the discs in question have all been tested on other operating systems & other hardware, therefore it's not necessary to write "then you may have a hardware problem" or "May also indicate a system corruption".  That's incorrect information and it shows that you have not actually read the other posts before replying. 
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    Anyway, from the information I've gathered from your posts above, you will not thoroughly read this post either.  I fully expect an angry response that has not been well though out, due to the lack of comprehension of what I'm saying here.  That being said, please suprise me by posting nothing at all...that would be spectacular!

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