Sunday, January 19, 2014

The selected file is not an valid iso file error by Windows 7 USB/DVD download tool



Did any of you wanted to create a USB image to setup Windows 7/8? Well there is a tool created by Microsoft for that. It's called "Windows 7 USB DVD Download Tool". You can download the tool from this.


The tool works fine but in an unexpected situations you might encounter the following error.


The reason for the above is that the ISO you created is not according to the Microsoft Standard's for the installation media.

Generally when an ISO image is created the ISO 9660, CD File System is set. But in addition to this the above tool requires 2 more attributes set in the ISO.

1. Joliet
2. UDF

Once the above is set the newly created file is considered a valid ISO file by the tool.

You could use UltraISO to create an Windows ISO file. It has the options to specify the above mentioned attributes.
 



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