IGEL Thin Clients — PXE Boot

Verified IGEL Thin Client Models

The following IGEL thin client models have been successfully tested by openthinclient GmbH and verified for use with the openthinclient Management Server:

• UD3 - M340C
• UD3 - M350C

1. Preparing the openthinclient Management Server

Ensure the following prerequisites are met:

• Ensure the openthinclient Management Server is fully installed and operational.
• Ensure PXE boot services (DHCP, TFTP, HTTP/FTP) are active.
• Register the thin client with the management server or rely on automatic detection during the first PXE boot.
• In the hardware type, set the boot method to Sicher .
• For UD3 — M340C, in the hardware type, select the specific graphics driver. Bevorzuge amdgpu über radeon Treiber in the Hardware Type

2. Enable network boot (PXE) in the BIOS/UEFI

Perform the following BIOS/UEFI settings on the IGEL ThinClient:

• Enable PXE boot

• Set the boot order with LAN / PXE first.

• Configure Secure Boot to be disabled.

These settings ensure that the thin client attempts to boot from the network by default at startup.

3. Force network boot

To ensure the ThinClient boots via PXE permanently, prepare the local storage medium so it contains only non-bootable partitions. This approach reliably directs booting to the network.

Procedure:

Execute the following terminal commands on the IGEL ThinClient (e.g., via a live system or a shell session after PXE boot):

sgdisk -Z /dev/sda   # Löscht alle Partitionstabellen (MBR und GPT)
sgdisk -og /dev/sda  # Erstellt eine neue, leere GPT mit zufälliger Disk-GUID

Note: Replace /dev/sda with the correct device, e.g., /dev/mmcblk0 (for eMMC).

• The local storage now contains only non-bootable data.

• The thin client automatically attempts a network boot at every startup.

• Configure the system to use network boot exclusively.

4. Summary

Completely delete the partition tables of the IGEL ThinClient to ensure that it boots via PXE from the openthinclient Management Server at every startup.