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MacBook Pro CD burning is not permanent

I am trying to burn a bootable CD to update my harddisk firmware. This is what I have tried: Using Disk Utility: pressing burn, selecting the bootable image, speed = maximum possible (24x), verify ...
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1answer
877 views

How to calibrate a superdrive's laser for CD and DVD burning?

Since I bought my Macbook Pro 5.1 two and a half years ago I could barely burn DVDs and CDs. I have read some discussions on the Apple forums that pointed a potential solution that didn't work for me: ...