The 5.4.0 version is based on Linux kernel 5.4.x and uses the Openbox window manager. It runs entirely in RAM (Random Access Memory). Once booted, you can remove the USB drive or optical disc. This results in:
On the factory floor, a monitor displays a real-time production dashboard. The kiosk ensures that the dashboard is always visible and cannot be closed. Porteus-Kiosk-5.4.0-x86-64.iso
The project has moved to Porteus Kiosk 6.x (based on Linux kernel 6.x). So why stick with 5.4.0? This results in: On the factory floor, a
| Feature | Porteus 5.4.0 | Porteus 6.x+ | | :--- | :--- | :--- | | Kernel | 5.4 LTS (stable, proven) | 6.1+ (newer hardware support) | | Firefox | ESR v78 / v91 | ESR v115+ | | RAM usage | ~180 MB idle | ~280 MB idle | | Legacy hardware | Runs on Core 2 Duo, old Atoms | Requires SSE4.2, modern chips | | UEFI Secure Boot | Manual workaround | Native support | So why stick with 5
Verdict: For new hardware with UEFI (2020+), use version 6.x. For industrial thin clients, digital signage on 2017-era PCs, or environments where "if it isn't broken, don't fix it," Porteus-Kiosk-5.4.0-x86-64.iso is the gold master.