To a TFTP server. For more on multiple configuration files, refer to “Multiple Configuration Files” on page 5-33. For example, to upload the current startup configuration to a file named sw2910 in the configs directory on drive “d” in a TFTP server having an IP address of 10.28.227.105. In this article, I am going to show you how to configure CentOS 8 as a TFTP server. The full form of TFTP is Trivial File Transfer Protocol. It works just like FTP (File Transfer Protocol). But, TFTP does not have any security feature built in.

• 2Installing a TFTP server on Ubuntu

Background Information

The Trivial File Transfer Protocal, or TFTP, is used to transfer files from machine to machine with less overhead than other protocols. For more information about TFTP, see the following page: http://en.wikipedia.org/wiki/Trivial_File_Transfer_Protocol

Nearly all of the EMAC ARM based systems require a TFTP server to transfer the Linux kernel and file system to the board from a host PC. The boot loader will connect to the server to retrieve specific files and relocate them to SDRAM, which enables them to be programmed onto the target's flash.

Installing a TFTP server on Ubuntu

There are several TFTP server alternatives in Ubuntu. The tftpd or tftpd-hpa packages are recommended for installation.

Installing tftpd on Ubuntu

To install the tftpd package, run the following:

To configure the the TFTP server, create /etc/xinetd.d/tftp with the following contents:

Run the following to create the TFTP server's base directory and allow anyone to access it:

Once the configuration is complete the xinetd deamon should be restarted to enable the server:

The TFTP server is then ready to send/recieve files from /tftpboot.

Installing a TFTP server on Windows

For Windows based systems, EMAC recommends the Tftpd32 server.

1. Download the latest version of the program from the download page at:http://tftpd32.jounin.net/tftpd32_download.html

2. When the installer is finished downloading, run the .exe to start the installation. Note that Windows may ask for approval to run the installer.

3. When the license agreement window appears click I Agree.

   
   

4. Next the options windows will appear. Leave the default options and click Next.

   
   

5. When the installation directory windows appears click Install.

   
   

6. Upon sucessful installation, click Close.

   
   

The TFTP server is now installed on your Windows machine. Select the program from the start menu or Desktop to launch the server.

1. The following firewall message may appear; click Allow access to continue.

   
   

2. The main window for the TFTP server should appear.

   
   

3. Click the Settings button to configure the server. In the GLOBAL tab unselect the DHCP Server check box.

   
   

4. Next click the TFTP tab to configure the TFTP server. The Base Directory should be changed to the directory which will contain the files to be transferred. Clicking Browse under Base Directory will bring up a window to select the appropriate directory. Once the directory is set click Okay to return to the main window.

   
   

5. Place the files that are to be transferred into the selected base directory. Upon successful transfer, the Tftp server tab will temporarily display the transfer.

   
   

Applies to

• Windows 10

This walkthrough describes how to configure a PXE server to load Windows PE by booting a client computer from the network. Using the Windows PE tools and a Windows 10 image file, you can install Windows 10 from the network.

Prerequisites

• A deployment computer: A computer with the Windows Assessment and Deployment Kit (Windows ADK) and the Windows PE add-on with ADK installed.
• A DHCP server: A DHCP server or DHCP proxy configured to respond to PXE client requests is required.
• A PXE server: A server running the TFTP service that can host Windows PE boot files that the client will download.
• A file server: A server hosting a network file share.

All four of the roles specified above can be hosted on the same computer or each can be on a separate computer.

Step 1: Copy Windows PE source files

1. On the deployment computer, click Start, and type deployment.

2. Right-click Deployment and Imaging Tools Environment and then click Run as administrator. The Deployment and Imaging Tools Environment shortcut opens a Command Prompt window and automatically sets environment variables to point to all the necessary tools.

3. Run the following command to copy the base Windows PE files into a new folder. The script requires two arguments: hardware architecture and destination location. The value of <architecture> can be x86, amd64, or arm and <destination> is a path to a local directory. If the directory does not already exist, it will be created.

   For example, the following command copies amd64 architecture files to the C:winpe_amd64 directory:

   The script creates the destination directory structure and copies all the necessary files for that architecture. In the previous example, the following directories are created:

4. Mount the base Windows PE image (winpe.wim) to the mount directory using the DISM tool. Mounting an image file unpacks the file contents into a folder so that you can make changes directly or by using tools such as DISM. See the following example.

   Verify that 'The operation completed successfully' is displayed. Note: To view currently mounted images, type dism /get-MountedWiminfo.

5. Map a network share to the root TFTP directory on the PXE/TFTP server and create a Boot folder. Consult your TFTP server documentation to determine the root TFTP server directory, then enable sharing for this directory, and verify it can be accessed on the network. In the following example, the PXE server name is PXE-1 and the TFTP root directory is shared using a network path of PXE-1TFTPRoot:

6. Copy the PXE boot files from the mounted directory to the boot folder. For example:

7. Copy the boot.sdi file to the PXE/TFTP server.

8. Copy the bootable Windows PE image (boot.wim) to the boot folder.

9. (Optional) Copy true type fonts to the boot folder

Step 2: Configure boot settings and copy the BCD file

Tftp Server Linux

1. Create a BCD store using bcdedit.exe:

2. Configure RAMDISK settings:

   The last command will return a GUID, for example:

   Copy this GUID for use in the next set of commands. In each command shown, replace 'GUID1' with your GUID.

3. Create a new boot application entry for the Windows PE image:

4. Configure BOOTMGR settings (remember to replace GUID1 in the third command with your GUID):

5. Copy the BCD file to your TFTP server:

Your PXE/TFTP server is now configured. You can view the BCD settings that have been configured using the command bcdedit /store <BCD file location> /enum all. See the following example. Note: Your GUID will be different than the one shown below.

Tip

If you start the PXE boot process, but receive the error that 'The boot configuration data for your PC is missing or contains errors' then verify that boot directory is installed under the correct TFTP server root directory. In the example used here the name of this directory is TFTPRoot, but your TFTP server might be different.

Tftp Server For Mac

PXE boot process summary

Tftpd32 Server

The following summarizes the PXE client boot process.

The following assumes that you have configured DHCP option 67 (Bootfile Name) to 'bootPXEboot.n12' which enables direct boot to PXE with no user interaction. For more information about DHCP options for network boot, see Managing Network Boot Programs.

1. A client is directed by DHCP options 066 and 067 to download bootPXEboot.n12 from the TFTP server.
2. PXEboot.n12 immediately begins a network boot.
3. The client downloads bootbootmgr.exe and the bootBCD file from the TFTP server. Note: The BCD store must reside in the boot directory on the TFTP server and must be named BCD.
4. Bootmgr.exe reads the BCD operating system entries and downloads bootboot.sdi and the Windows PE image (bootboot.wim). Optional files that can also be downloaded include true type fonts (bootFontswgl4_boot.ttf) and the hibernation state file (hiberfil.sys) if these files are present.
5. Bootmgr.exe starts Windows PE by calling winload.exe within the Windows PE image.
6. Windows PE loads, a command prompt opens and wpeinit.exe is run to initialize Windows PE.
7. The Windows PE client provides access to tools like imagex, diskpart, and bcdboot using the Windows PE command prompt. Using these tools together with a Windows 10 image file, the destination computer can be formatted properly to load a full Windows 10 operating system.

See Also

Concepts