harddrive damaged? save files... replace harddrive?


my son put a pretty strong magnet on my MacBook Pro, 2,2 Ghz Intel Processor, 15". I bought this MacBook around 2 years ago.

The MacBook froze and did not load again. The following error code was found by a technician who seemed to have done some tests: 4SNS/1/40000000. And I was told that this may have something to do with overheating.

But today another techician was able to get into the Install system Screen (Alt / ON)

and said that the processor or other hardware periphery is not damaged, and the harddrive is still working... but not completely... since we tried to access the files by connecting the computer via firewire to another computer and the files could not be accessed. Apparently the hiearchy can be seen but the files are not accessible. And I was told that perhaps some of the system files were probably damaged and that is why the system broke down...

I am planning to install another harddrive and save the other until I am able to maybe recover the files with a harddisk recovery program.

Can anyone recommend me a good affordable program to do this ?

And can anyone give me any other tips in this frustrating hour...?



Answered! View the answer I have this problem too

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Here is a URL list of a number of free data recovery programs. I hope one is the answer for you. Ralph


And here is the URL for an excellent commercial program. Ralph


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The military uses electro magnets to erase hard drives. Get an external adapter: http://eshop.macsales.com/item/Newer%20T...

then one of the recovery programs Ralph recommended and just let it run for a couple of days.


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The drive is probably not physically damaged. If you're not able to recover the data, you can most likely format it and reinstall your OS. Just the fact that you can see ANYTHING on the drive is a good sign of its longevity. To be sure, run a scan for bad sectors on it.

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Nadia Salom will be eternally grateful.
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