# Booting Error

If your computer fails to boot from the IODD, please follow this troubleshooting checklist to identify and resolve the issue.

### 📋 Troubleshooting Checklist

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**ISO & Media Validation**

* **Verify Bootability**: Ensure that the ISO file you are using is a bootable image. Non-bootable data ISOs will not trigger a boot sequence.
* **Hardware Comparison**: If a bootable ISO fails, try testing it with a physical USB DVD-ROM to confirm if the issue is with the ISO file itself or the system's compatibility.
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**Drive & System Configuration**

* **Multi-LUN Support**: Some older PCs do not support multiple Logical Unit Numbers (LUN). If the IODD is not recognized, configure it as a single drive in the **Mode Configuration** settings.
* **Internal DVD Conflict**: If your laptop has an internal DVD-ROM, it may conflict with the IODD. Disable the internal drive in the BIOS settings or physically remove it if necessary.
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**Power Supply Issues** The IODD is a high-performance, bus-powered USB device. If your computer's USB port provides unstable power, the boot process may fail.

* **Solution**: Use a **USB Y-Cable** to draw additional power from a second USB port.
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**OS & Platform Compatibility** Newer hardware platforms may lack the necessary drivers for older operating systems.

* **Example**: You cannot install a genuine Windows 7 on the **Skylake** (or newer) platform using a USB DVD-ROM device without injecting proper USB 3.0/XHCI drivers into the ISO.
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***

### Advanced Hardware Check (Linux/macOS)

You can check if the IODD is correctly being recognized as a bootable optical or mass storage device via the terminal:

```bash
    # On macOS, check if the disk is listed as external and bootable
    $ diskutil list
    
    # On Linux, check the device type and partitions
    $ lsblk
```