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Mac peripherals forum: CD/DVD disks suddenly not recognized

by: jennywren1420 January 28, 2010 2:57 PM PST

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CD/DVD disks suddenly not recognized

by jennywren1420 - 1/28/10 2:57 PM

Hello, all, I'm back like the proverbial bad penny with a new problem.

I had just backed up my hard disk (on a G4 desktop, Sawtooth model, running OS 10.4.11) to a LaCie drive with Carbon Copy Cloner, which has never been entirely happy doing that. (Long story, maybe not relevant.) Having had several reports of failure to simply do an incremental backup, I decided to try copying the whole of Macintosh HD to the LaCie. Tried that and once again, CCC complained that it couldn't do the job completely and suggested that I click on the box next to the instruction to bypass (ignore?) files on the LaCie that were not on the Mac HD. There still were some errors, but I decided that was good enough. (I had done all the diagnostics for the permissions and disk before starting CCC.)

Then I wanted to burn the contents of either my Macintosh HD or the LaCie (now presumably identical)to a DVD/RW disk. I started by making a new Burn Folder after checking out how to do it in Mac Help, but the DVD/RW disk I put into my external HD didn't show up on the desktop. I tried a CD-R disk. That didn't show up, either, nor did a commercially prepared disk. All this for a drive that I used only a day or two ago with total success.

I switched the Firewire cable to another Firewire outlet on my G4, unplugged the device for a while, put the power cord of the external drive into another outlet, everything I could think of. And I ditched the DVD player preference file. I used Disk Warrior and checked the permissions with Disk Utility. I verified the hard drive with Disk Utility, too, and it passed with flying colors. All to no avail.

Of course, I can't clean the lens, because that requires that the device recognize that it has something inside. I can't use the internal device that came in my Mac for burning disks: It only deals with DVD-ROM, I believe, and I know it can't write CDsthough I can play CDs and DVDs in it.

- Do you think I did something when I was studiously trying to set up a burn folder for the contents of my drive? (I also investigated disk images and such, but I don't think I clicked on anything.)

- Could it be owing to my strange odyssey with Carbon Copy Cloner, which definitely disapproved of some of what was on my hard drive?

- Do you think there is anything I can try to repair this problem? I don't know whether my Mac isn't recognizing the device or the disk, or the device is not recognizing that it has a disk inside. I certainly can hear the thing turn on and hum busily, but it doesn't make that comforting clicking sound that one gets when a drive is preparing to do its thing with a disk.

I considered booting up from my Tiger OS disk (after I had discarded my Finder pref to deal with another problem), but I really don't know what I would want to do with it, nor whether the problem is with my external SuperDrive or with some software. Any ideas, anyone? This was so sudden that it could well be owing to either source. Or to Carbon Copy Cloner (which is unlikely).

Thanks for reading this long saga. I hope to cull your wisdom, but at least, my difficulties may also inform others, should they fall into this same pit.

All the best,


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