NAS4Free is a continuation of the FreeNAS 7 project, while FreeNAS 8 is based on nanoBSD NAS4Free is based on FreeBSD 9. You will notice that NAS4Free retains the FreeNAS 7 web interface and general feel.
Download the .img version if you want to boot NAS4Free from a USB drive or any other flash media. NAS4Free-x86-embedded-188.8.131.52.262.img, as the name suggest this is the embedded version. Visit http://sourceforge.net/projects/nas4free/files/ and browse until you find the latest version. Now that we have the file we first need to decompress it, otherwise we won’t be able to create a bootable drive. To decompress the file you will need a third party utility like 7-Zip. This is the resulting file, now rename the file by adding the .img extension. Start Win32 Disk Imager and click on the folder icon, now browse to the location where the file we just renamed resides. From the device list select the USB drive you wish to write the image to and click on the Write button to start the operation. Make sure you selected the right drive since this operation will overwrite the contents of the selected drive. Click on Yes to continue. Progress. The operation encountered no problems, this means the USB drive is now bootable. You can now exit the application. Now you have to make sure the BIOS supports booting from removable media The installation will be loaded into RAM. This the NAS4Free console and the default IP address for the web interface is 192.168.1.250. From a web browser try to access http://192.168.1.250, you should see an interface similar to the one in the picture below. Congratulations on your NAS4Free installation.
There could not be a better continuation of the FreeNAS 7 project, I am sure NAS4Free will find its place. Home page: www.nas4free.org