SuperDrive burning very slowly on El Capitan

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Level 1

1 points

SuperDrive burning very slowly on El Capitan

My SuperDrive has been running very slow lately while burning data CDs. Tonight I just realized it probably started happening around the time I upgraded to El Capitan (10.11.1). I burn batches of CDs for my photography business just a few times a month, but when I do, I need to burn 20-30, and the added delay is very noticeable. I would estimate it is 3x-4x longer to burn.

I use the utility Burn (v 2.5.1 http://burn-osx.sourceforge.net/) to make data CDs around 300-400mb. Standard JPEG files. I haven't changed any settings in Burn, or done anything else I can associate with the slowdown. The clock on Burn ticks down the time remaining, and each second takes 2-4 real seconds before it changes.

I havn't changed any hardware etc., so unless SuperDrive is prone to getting slow in old age, I'm not sure what besides El Capitan that it could be.

Any suggestions?

Ben

iMac (27-inch, Late 2012), OS X El Capitan (10.11.1)

Posted on Dec 10, 2015 4:06 PM

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Answer 1

tbirdvet

Level 6

13,683 points

Dec 10, 2015 4:43 PM in response to BenGsays

To rule out a compatibility issue what happens if you just burn a file directly to a disc not using your noted program? Is it slow or normal?

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Answer 2

nkfrombc

Level 1

13 points

Jan 4, 2016 3:26 AM in response to BenGsays

I have a similar issue, mine is with audio cd and external burner.

Last week while i am still running Maverick, I was getting 16X burn speed for Audio CD in itune using external USB 2.0 burner.

2 days ago, I upgraded from to El Capitan, using the same batch of blank, burner, I am getting only 4X burn speed.

In console log, disc recording is asking to burn at 4X instead of 16X in Maverick.. I tried to force it to burn at higher speed but the audio CD came out as corrupted.

Both itune and Burn get me the same result.

I believe there is a problem with El Capitan.

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Answer 3

horstp

Level 1

8 points

Mar 11, 2016 12:25 AM in response to BenGsays

I have the same issue. Since upgrading to El Capitan, my external USB drive (Pioneer DVR-112D) has become ridiculously slow when burning audio CDs.

This is what the console said before moving to El Capitan:

iTunes: Burning to CD-R media with SAO strategy in PIONEER DVD-RW DVR-112D 1.21 via USB.

iTunes: Requested burn speed was max, actual burn speed is 40x.

iTunes: Burn underrun protection is supported, and enabled.

iTunes: Burn finished, Thu Feb 11 09:23:34 2016

This is what the console says with El Capitan:

iTunes: Burn started, Fri Mar 11 08:40:03 2016

iTunes: Burning to CD-R media with SAO strategy in PIONEER DVD-RW DVR-112D 1.21 via USB.

iTunes: Requested burn speed was 4x, actual burn speed is 4x.

iTunes: Burn underrun protection is supported, and enabled.

iTunes: Burn finished, Fri Mar 11 08:59:38 2016

Needless to say, I did not change any settings. It seems as if El Capitan is forcing iTunes to burn at 4x.

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