To provide the best features, XigmaNAS only supports 64-bit systems.

When you get to the downloads page, you'll see a number of files like this:

readme_xx.x.txt
changes_after_xxxx_release_xx.x.txt
XigmaNAS-x64-LiveCD-xx.x.x.x.xxxx.iso
XigmaNAS-x64-LiveUSB-GPT-xx.x.x.x.xxxx.img.gz
XigmaNAS-x64-LiveUSB-MBR-xx.x.x.x.xxxx.img.gz
XigmaNAS-x64-full-xx.x.x.x.xxxx.txz
XigmaNAS-x64-embedded-xx.x.x.x.xxxx.img.xz
XigmaNAS-x64-xx.x.x.x.xxxx.SHA512-CHECKSUM

Follow the guide below to see which file you should download.

If you're just starting with XigmaNAS, you'll want one of these install disc images:

• XigmaNAS-x64-LiveUSB-GPT-xx.x.x.x.xxxx.img.gz
  This is the 64-bit install/LiveUSB image. It is intended to be written to a USB Flash drive, and then booted to perform the initial install. Most new users will probably want this file.
  
  
• XigmaNAS-x64-LiveUSB-MBR-xx.x.x.x.xxxx.img.gz
  This is the 64-bit install/LiveUSB image for systems that can't boot to a GPT USB stick using the file above.

• XigmaNAS-x64-LiveCD-xx.x.x.x.xxxx.iso
  This is the 64-bit install/LiveCD image. It is intended to be written to a CD, and then booted to perform the initial install.
  
  

These files are only needed if you have an existing XigmaNAS system that you want to upgrade the firmware for.

• XigmaNAS-x64-full-xx.x.x.x.xxxx.txz: This is the full upgrade image for 64-bit full install systems. It is only useful if you are performing an upgrade from WebGUI. This file is NOT what you are looking for otherwise. First system install needs to be done by LiveCD/LiveUSB only!
  
  
• XigmaNAS-x64-embedded-xx.x.x.x.xxxx.img.xz: This is the upgrade/CF image for 64-bit hardware. It is only useful if you are performing an upgrade from WebGUI. This file is NOT what you are looking for otherwise. First system install needs to be done by LiveCD/LiveUSB only!