offline installation bundle

installer/README.md

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+# AtlasOS Installer
+
+This directory contains installation scripts for AtlasOS on Ubuntu 24.04.
+
+## Files
+
+- **`install.sh`** - Main installation script
+- **`bundle-downloader.sh`** - Downloads all packages for airgap installation
+- **`README.md`** - This file
+
+## Quick Start
+
+### Standard Installation (with internet)
+
+```bash
+# From repository root
+sudo ./installer/install.sh
+```
+
+### Airgap Installation (offline)
+
+**Step 1: Download bundle (on internet-connected system)**
+```bash
+sudo ./installer/bundle-downloader.sh ./atlas-bundle
+```
+
+**Step 2: Transfer bundle to airgap system**
+
+**Step 3: Install on airgap system**
+```bash
+sudo ./installer/install.sh --offline-bundle /path/to/atlas-bundle
+```
+
+## Options
+
+See help for all options:
+```bash
+sudo ./installer/install.sh --help
+```
+
+## Documentation
+
+- **Installation Guide**: `../docs/INSTALLATION.md`
+- **Airgap Installation**: `../docs/AIRGAP_INSTALLATION.md`
+
+## Requirements
+
+- Ubuntu 24.04 (Noble Numbat)
+- Root/sudo access
+- Internet connection (for standard installation)
+- Or offline bundle (for airgap installation)