Do I have to write this SD Card image in Linux, or can I use Windows instead?

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http://www.linuxquestions.org – I am trying to follow this tutorial (PLEASE VIEW)) to install an Android image on a .tar.gz file and write it to a microSD card for use on the (BeagleBone Black) microcomputer. However, I have had some difficulty, and am wondering if I could download the file on Windows, use 7-zip to convert it to a .img, and then write it onto the microSD card for use on the BeagleBone Black, thereby avoiding using Linux and use Windows instead? (HowTos)