In an article some time ago I explained how it was possible to create a USB flash drive to install Windows . Article by comments revealed a fairly widespread problem relating to an error on the ISO. In particular, the Windows 7 USB / DVD Tool does not recognize as valid the image that is given in the meal, returning the error ” The selected file is not a valid ISO file “. After some research and some testing, I’ll explain how to win it on this annoying problem.
Without going into technicalities that are beyond the scope of the article, the cause of the problem lies in the ISO format.
The files of this type, usually, are the images that are then burned to CD or DVD. Like any physical media even CD and DVD have different file system types that define how data is written in them. The ISO, which are recognized as valid only support ISO9660 file system that unfortunately is indigestible to the Windows 7 USB / DVD Tool. To solve this problem you need to “redo” the image by adding support to the UDF and Joliet.
To achieve this it is sufficient to use a program that is able to open, edit, close the ISO images: my choice fell ImgBurn on, since it’s free and easy to use here are the steps to remake the ISO image so that it is compatible with the tools to create the USB stick.
ImgBurn Download and install: the setup does not require any settings.
Once installed, launch the program and select the option Create Images from files / folders
Now simply specify the following information:
- where the image is stored “bad” that we want to rebuild;
- here is the heart of this process: here will show in ImgBurn you want to rebuild the image with support for file system ISO9660 , Joliet and UDF ;
- specifies the name of the New image that will be created and the folder where you want to be saved;
- start the procedure!
Click Yes on the confirmation popup that appears immediately after
Give a name to the volumes: I opted for a simple WIN81 because the image of the example concerns an ISO of Windows 8.1.
Click Yes to continue.
Wait the end of the operation and click OK on the last popup communicate their completion.
[Box type = “warning” align = “alignCenter”] In some cases (rare) a statement that even after this procedure the error persists: if it happens, report it in the comments. [/ Box]
Perfect! Now the image should be compatible and the error “The Selected File Is Not a Valid ISO File” should no longer bother you.