Apple Hardware Test wont start

Hey!
   I hope someone can help, I have a mid 2009 Macbook Pro, I want to run Apple Hardware Test, by holding down the D key whilst restarting the computer or from the computer being completely shut down it doesn't work. I have also tried booting AHT with the installation disk in the drive.
Any thoughts?

Try starting the AHT with the OPTION + D keys.
You should be able to use the #2 install disk.  It has the AHT instructions on it.
Ciao.

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    I wonder if it a permission issue?
    Maybe chmod 777 the correct files would help
    Not sure which files but you did have an error which says it cant write due to being read on. Are you the admin of the laptop and are able to mod all the files?
    I could be wrong but just an idea.
    Have you also tried to re-download the OS you are trying to install in case it is corrupt?

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    com.apple.driver.AppleSMCLMU     2.0.2d0
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