PINN: An Enhanced Raspberry Pi OS Installer

What PINN Adds to the NOOBS Model

PINN, short for "PINN is not NOOBS," is presented as an enhanced version of the NOOBS Operating System Installer for the Raspberry Pi. It addresses a specific setup problem: choosing and installing an operating system from an SD card without first writing a complete system image with a separate desktop application. The intended audience is Raspberry Pi owners who can format a card, boot the Pi, connect it to a network, and use the graphical installer.

The documented workflow retains the recovery-media model familiar from NOOBS. A downloaded archive is copied to a FAT32 SD card, the card is inserted into the Pi, and PINN starts when the computer boots from it. PINN then displays available operating systems and installs the selections made by the user.

PINN does not bundle operating systems. Users must download them through the connected network or provide them on a USB stick. This makes PINN an installation environment rather than a Raspberry Pi distribution with a fixed catalog of preinstalled images. Image availability depends on the sources reachable from the recovery environment, while image compatibility depends on the operating system and Raspberry Pi hardware involved.

The repository contains NOOBS documentation, a separate README_PINN.md file, a change history, and directories associated with recovery, build systems, and device support. The README sends readers to README_PINN.md for usage documentation and to history.md for the change record. Because those files are not quoted in the README, the article does not claim specific enhancements beyond the documented recovery, network, and operating-system selection flow.

PINN Boot, Partition, and Network Flow

PINN begins with files copied onto a FAT32 SD card. When the Pi boots that card, the recovery environment presents the installation interface. On first boot, PINN automatically resizes the "RECOVERY" FAT partition to a minimum size. The README warns that this partition may look unusually small when the card is inserted into Windows. It identifies that appearance as normal rather than as evidence that the installation has failed.

The documented online installation path begins with Ethernet. Users can connect the Pi with an Ethernet cable, then wait for PINN to list operating systems. Wi-Fi is also supported through the interface. Selecting the Wi-Fi control opens a form in which the user chooses an SSID and enters its password. If the Wi-Fi button is greyed out, the README directs the user to choose another type of Wi-Fi dongle.

After a network connection is available, PINN displays the operating systems that it can offer. The user can select one or more entries and press "INSTALL." The README does not describe the download protocol, image verification method, progress display, logging location, or behavior when storage runs out during installation. It also does not document a rollback mechanism for an interrupted write. Those omissions matter to unattended deployments, even though they do not prevent the documented interactive workflow.

The repository contains a `recovery/` directory and an `sdcontent/` directory, but the directory names alone do not establish their internal implementation. The README describes the user-facing flow rather than the compiler, runtime language, partition-writing code, or network client used to carry it out.

Preparing and Booting the PINN Card

The README gives a file-based tutorial rather than package-manager installation instructions. First, format the SD card as FAT32. For Windows, PINN recommends the SD Association's Formatting Tool and links to the Raspberry Pi quick-start guide. It notes that version 5 formats the entire card volume by default. Users of version 4 may need to enable "FORMAT SIZE ADJUSTMENT" in the "Options" menu.

For Linux, the README recommends `gparted` or `parted`. Its macOS guidance points to Disk Utility and specifies "MS-DOS" format. These instructions concern preparation of the storage device, not installation of PINN as a software package.

Next, download `pinn-lite.zip` from SourceForge and extract its contents onto the formatted card. The README says Windows built-in extraction may have trouble with the archive and suggests 7zip as an alternative. If extraction creates a directory, copy the files located inside that directory to the root of the SD card. Copying only the containing directory would leave PINN files one level too deep.

Insert the prepared card into the Pi and boot it. The expected result is the PINN recovery interface, followed by automatic reduction of the "RECOVERY" FAT partition on first boot. Connect Ethernet or enter Wi-Fi credentials, wait for the operating system list, select one or more systems, and press "INSTALL."

PINN supplies no operating systems during this process, so a USB stick or network connection remains necessary. The README does not document installation logs, a resume command, a rollback procedure, or a verification step for the resulting Raspberry Pi system.

Building PINN from the Repository Layout

The repository is primarily composed of Makefiles, scripts, recovery files, SD-card content, documentation, and build-related directories. Visible entries include `BUILDME.sh`, `buildroot/`, `buildroot-2023.02/`, `recovery/`, `sdcontent/`, and `config.txt.example`. It also contains hardware and peripheral resources such as `cypress2/`, `cypress3/`, `con2fbmap/`, `joy_keys.md`, `cec_keys.md`, and `joystick_new_json/`.

This layout shows that the GitHub repository contains more than a simple wrapper around the downloadable `pinn-lite.zip`. Build inputs, recovery components, configuration examples, and device-related files are stored in the tree. The repository's primary language is identified as Makefile, while the visible scripts include shell automation such as `BUILDME.sh` and translation-related hooks.

The README does not provide a complete source-build tutorial. It does not list host dependencies, supported build hosts, build outputs, or the conditions that select between `buildroot/` and `buildroot-2023.02/`. It would therefore be misleading to provide an invented one-line build command. An engineer interested in compiling from source would need to inspect `BUILDME.sh` and the included build directories directly.

For ordinary installation, SourceForge is the documented distribution route. A source build adds a different verification burden: the engineer must establish whether the generated recovery image, partition layout, and SD-card content match the published archive. Without documented build steps, reproducing a release is not confirmed by the README.

NOOBS Compatibility and the Limits of Comparison

The clearest documented alternative is NOOBS because PINN is explicitly described as a version of that installer. PINN begins with an SD-card recovery environment and moves operating-system selection onto the Pi after startup. PINN is said to add features beyond the original NOOBS documentation, but the README sends readers to README_PINN.md and `history.md` for those details rather than enumerating them.

A feature-by-feature comparison cannot be confirmed from the README. It is also premature to treat PINN as a replacement for every current Raspberry Pi setup method. A manual image-writing workflow is operationally different because the operating system image is prepared before the card is inserted. PINN instead retrieves or receives a selected image after its recovery environment starts.

For a prospective user, the relevant issue is whether PINN's additions address a real need. Storage layout, network availability, image source, and recovery requirements can determine whether the recovery-based approach is preferable. The repository topics include `rpi1`, `rpi2`, and `rpi3`, but repository topics are not a compatibility guarantee. Users should verify the exact Raspberry Pi model and operating system combination in the PINN documentation before writing an image.

The project also carries a support boundary around external images. PINN can present and install systems, but the README does not promise compatibility with every image or explain who maintains those images. That distinction matters when comparing PINN with a workflow centered on a single vendor-provided image.

Release History, Licensing, and Upgrade Cost

The repository is not archived, and its last push was on 2026-05-22. Listed releases include `p3.9.8` on 2026-02-10, `P3.9.7` on 2025-07-20, and `p3.9.4` on 2025-01-07. This history shows recent project changes, but it does not establish long-term support for every Raspberry Pi generation or every operating system image.

The repository's license is not identified in the repository metadata. No SPDX identifier or license text can be named from the README. That does not establish any restriction by itself. It does mean that an organization should not assume permission to modify, redistribute, or embed PINN components. License terms for separately supplied operating system images are separate concerns because PINN does not bundle those images.

An upgrade can require repeating the SD-card process. Users must obtain the newer archive, prepare the card, and boot the recovery environment again. The documented release list gives version labels and dates, but the README does not describe an in-place upgrade mechanism or an automated way to migrate an existing PINN installation.

Operational planning should also account for image downloads, network availability, and recovery after an interrupted installation. The README does not provide commands for checking those states or for restoring a card. Its explicit warnings cover formatting and the first-boot partition resize, not installation recovery.

Editorial conclusion

PINN is appropriate for Raspberry Pi users who want an SD-card-based graphical installer and are comfortable obtaining operating system images separately. It is a poorer fit for users who expect bundled images, documented licensing terms, or a complete command-line installation workflow. Before adoption, verify support for the intended Raspberry Pi model and operating system, read README_PINN.md for PINN-specific behavior, and confirm the licensing position before redistributing a built card.

Frequently asked questions

Official sources

1. Issues
2. procount/pinn on GitHub
3. README
4. Releases