CD-R not recognized

Ditto, same problem for me though with various brands of blank CD-Rs. I just updated the EFI firmware and the problem still exists. I will hold out for a bit longer in hopes of finding a solution here, then it's off to Applecare 😟

Same problem with blank CD's. I get message that the disk can't be used because it is not recognized.

Matshita DVD-R UJ-85J burner. Disk Utility shows the burner, but won't allow me to do anything but partition or restore.

I am running Fusion and if I go to the Windows environment, blank CD is recognized and I can burn to it. So sit seems the burner is OK, and there is something in some Apple software that isn't allowing it to be recognized. After burning to this CD, I put it back in the Mac environment and it appeared on the desktop.

Figured this out!!

Instead of inserting blank CD or DVD in drive - start with the application

Open the Disk Utility and follow directions at http://docs.info.apple.com/article.html?path=DiskUtility/10.5/en/duh1749.html (this also addresses the issue of multisession CD buring). After the image is created from the folder with the files, it will ask you to put in the BLANK CD (or the CD with the previous session) and it will find it and burn it.

ALso a good article from MacUser UK at http://macuser.pcpro.co.uk/macuser/features/53216/making-a-multisession-cd-in-ma c-os-x-without-toast.html?searchString=
This one has screen shots to help (although some are in different menus in current Disk Utility).

Hope this works for all of you!!!

Okay Everyone, here's about the stupidest solution in the world - BUT IT WORKS...

Turn off the MacBook Pro
Unplug ALL peripherals
(I have a 30" cinema display, ethernet cable, and external WD 1 TB drive)
Restart the computer
Start Burning your disc
Then you can plug everything in and it will work fine.

HEY APPLE - sounds like you need to fix something in your firmware!!!

I'm using Sony DVD-R (today anyway). it seems to work everytime i do this.

here's an update on this topic. I just tried to burn a dvd and it wouldn't work. the only connection i had to the macbook pro was a ethernet connection to a windows network (of course). well as soon as i rebooted without the connection it worked fine. Bill and Steve need to play better together.

none of them works Nancy, pity.
I have same problem as all of you here above...
hoping for a solution for the few 100 cdrs I seem to cannot use anymore, I can tell you I can write on the expensive audio cdrs maxell provides...
price more than 10 times the Fujifilm I use for years allready, but they won't work anymore...
lucas

I have a DVD of American Beauty and every time I try to play it it says it is in a format was not recognized. Every other DVD I have works but this one. I bought it in the store so it is legit and it works in all my other DVD players. Is there something I need to do or download?

Quote: My MacBookPro does not recognize CD-R any more - it pushes them out after 30 seconds. CD-RW and DVD is fine.

I have the MATSHITADVD-R UJ-857 drive.

Does anyone else have such problems? I assume it could have something to do with one of the latest security updates because I didn't change something else on my system in the last weeks.


I do have the same exact problem.CD-R not recognize, but DVD's works fine. After putting 10.5 on
my machine, evrything came back normaly. yesterday, the problem showed up again. so it seems to be a software problem.
I tried to reflash the superdrive's FW but i did'nt works....
Please Help!!

Thanks Nancy, this worked for me...

My drive wasn't spitting the CD-Rs back out again, it just didn't see them at all. But the disk utility trick worked fine, so thanks again

Unsure now whether I should hand my mbp in for repair or just wait for a software update to fix the issue properly...

I have the same problem. I tried burning TDK CD-R 80min with the open-source application 'burn' which tells me it can't calibrate the laser power. Toast 8 gives me some errors too, like 'MEDIUM ERROR' etc...
In the 1.5 years that I have my MB Pro now, I have burned 10 disks in total maybe. The last months however it didn't work anymore and I suspect it has to do something with the 2.1 firmware too. DVD's seem to work fine. Also, reading CD's, both burnt myself and 'real' ones work. Burning DVD's work fine too.
Apple, please solve this.

I am hving the same problem as everyone else. It would be nice if the kind people at Apple would test the software to make sure that it will not render a person's machine somewhat inoperable prior to having us install it.

Vertainly since there are this many people on the forum with the problem, it has to be something more than a simple hardware issue.

I cannot access a maxell CD-R in any traditional manner.

After trying "Nancy's" method with the Disk Utility, I successfully burned the CD-R, but the format is unrecognizable in any non-Mac environment.

For backups, no problem. However, when attempting to burn a photo or two to be printed by a local photo store that uses PCs, it is a problem.

Any word on a solution to this?

Jamie

Was having the same problem. Tried all sorts of different CD-R's. Zapping the pram solved it for me.

How did you reset the PRAM?

To reset the PRAM, restart the computer, hold down the Apple, Option, P and R keys. After the initial startup chime, your computer should restart again. Let it chime again a couple of times, then release the keys. Your PRAM will have been reset. I have found this only works with Apple keyboards; third-party ones haven't worked for me for this.