I want to get ride of Windows on my Mac

I don't know for sure but it is most likely in the utilities folder of your applications folder

Xero108 said:

But where is that assistant? I've been looking for it.

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The assistant is the same thing you ran to partition the drive in the first place http://www.apple.com/bootcamp

Run that and delete your windows partition.

Of course check to see if you have it installed in your Utilities directory before you download the 350MB file again. You should still have it from when you first installed Windows.

Running into a similar problem on my macbook. I had my Windows installation running under Bootcamp 1.3. When I try to launch Bootcamp assistant I get a message that 1.3 is expired. Can I just install 1.4 and use it to delete the WIndows partition?

bob5820 said:

Running into a similar problem on my macbook. I had my Windows installation running under Bootcamp 1.3. When I try to launch Bootcamp assistant I get a message that 1.3 is expired. Can I just install 1.4 and use it to delete the WIndows partition?

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Yes.