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I have a Windows laptop HDD that I want to create an image file with, using OS X's Disk Utility.

When I try to create an image it fails (invalid argument). I created a video of me attempting to create an image.

Anyone know how to fix this so that I can image this drive?

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Can your mac write ntfs? – Raystafarian Feb 4 '12 at 21:37
@Raystafarian I don't know how this would be connected. The image will be written to the desktop. – slhck Feb 4 '12 at 21:53
up vote 1 down vote accepted

I don't know about the specific error you're getting, but you can try to use Carbon Copy Cloner and see if that works instead. Select your Windows volume as source on the left, and as destination, use New Disk Image.

In the settings, choose a read-only disk image.

enter image description here

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