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Disappearing Drive...


Da5id
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Hi all,

Since updating my system to OS X 10.8 (Mountain Lion) when I insert a Blu-ray disk the computer does not recognize the external drive (Matshita BD-MLT UJ240AS).

On insertion of a Blu-ray disk Toast reverts to the internal drive (Optiarc DVD), clicks and does not mount. When the Blu-ray disk is ejected the drive once again is displayed in Destination within Toast. This may not be the fault of the new system, I haven't tried to burn a Blu-ray for some time. Also getting hardware issues being displayed on the Matshita BD when trying to burn a DVD (Interface Error: 4).

Are the above problems symptomatic of a failing drive or possibly 10.8?

thanx da5id.

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Edited by Da5id
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The only way to tell if the drive is at fault is to connect it to a Mac running 10.7.x or earlier. Also, check if you can burn to it using Disk Utility. I'm presuming this is a USB 2 drive. Have you tried connecting it to a different USB port (on the Mac itself, of course)? There's a rare chance that something didn't get written properly during the 10.8 update that is causing high-speed USB communication problems.

 

We need to wait awhile for other reports from users who've upgraded to 10.8 to determine what kinds of new problems have appeared with Toast. As you point out, there are many possible explanations.

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I mentioned this in another thread. Since upgrading to Mountain Lion my internal Pioneer Blu Ray burner sometimes does not show up, in Toast, in "About This Mac," or anywhere else. I don't know about the external drive issue, but mine is not related to Toast at all. The only way I have found to get the burner to show up is to shut down the computer completely (just restarting doesn't work) and then start it again. Then the drive appears.

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I mentioned this in another thread. Since upgrading to Mountain Lion my internal Pioneer Blu Ray burner sometimes does not show up, in Toast, in "About This Mac," or anywhere else. I don't know about the external drive issue, but mine is not related to Toast at all. The only way I have found to get the burner to show up is to shut down the computer completely (just restarting doesn't work) and then start it again. Then the drive appears.

If you have Disk Warrior and if it is okay to use in Mountain Lion, I suggest running it. I once bought a G4 iBook directly from Apple and when it arrived I couldn't burn any discs. It turns out I had to reinstall the OS. Something was haywire in the original install. So I wonder if something went haywire during Mountain Lion's installation. If so, Disk Warrior is really good at finding the tiny things in the directory that need repair. Please be aware that I'm making a wild guess.

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