FreeNAS was officially renamed to TrueNAS CORE in 2020. The ISO creation process is identical for legacy FreeNAS 11.3 and modern TrueNAS 13.0/12.0. This guide uses current terminology but applies to both. Technical Write-Up: TrueNAS CORE ISO Creation & Deployment 1. Objective To obtain, verify, and write a bootable TrueNAS CORE ISO image to installation media (USB drive) for bare-metal or virtual machine deployment. 2. Prerequisites | Requirement | Specification | |-------------|---------------| | Host OS | Windows, Linux, or macOS (with administrative privileges) | | Target Media | ≥ 8 GB USB 3.0 flash drive (all data will be destroyed) | | Download Size | ~1.2 GB (TrueNAS CORE ISO) | | Network | Internet connection for download | 3. Step-by-Step Procedure 3.1 Download the Official ISO Navigate to the official iXsystems download portal:
http://<IP_ADDRESS>/ui/dashboard/ Find the IP address via console menu (option 1) or your router’s DHCP lease table. freenas iso
https://download.truenas.com/TrueNAS-CORE-13.0-U6.1.iso.sha256 FreeNAS was officially renamed to TrueNAS CORE in 2020
sha256sum -c TrueNAS-CORE-13.0-U6.1.iso.sha256 Technical Write-Up: TrueNAS CORE ISO Creation & Deployment 1