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Capture an image

After installing a FOG server, one of the first tasks you'll do is to
capture an image.

With 'capturing an image' we mean that you will make a copy of the
contents on a hard disk of a machine that you want to duplicate on other

The purpose of this guide is to show you the process of capturing an
image and deploy it on other hardware with help of FOG. In this guide we
will capture and deploy an image of a Windows 10 machine on older
hardware that has a BIOS (and not UEFI hardware), but the process for a
UEFI machine is almost similar.


Before capturing the image, you need to make sure that the machine is
'ready to image'. For a Windows machine this typically means that you
have done the following:

  • Downloaded a Windows installer ISO that you copied onto DVD or USB
  • Boot the machine with the DVD/USB drive and install Windows with the
    options you want
  • Install additional programs and drivers that you want to include in
    the image
  • Configure specific Windows settings, like regional settings
  • Install the FOG client on it: after deployment, the FOG client takes
    care of additional tasks, like changing the host name, install
    additional applications, install printers, etc..
  • Sysprep the machine and shut it down

We're assuming here that you have a running FOG server, that you are
able to log in on the FOG Web UI.

Registering the machine at FOG

Now that the machine is ready to capture the image from, it is time to
boot it from the network.

Plug in a cabled ethernet connection and in the BIOS, make sure the
machine boots from the network.

In the screenshot above you see a successful network boot:

  1. The PXE client on the machine brings up the network link and via
    DHCP an IP address is requested. The DHCP server (in the screenshot,
    the DHCP server is at hands out together an IP
    address (, also the 'next server'
    ( and 'file name' (ipxe.kpxe) options are handed
  2. The PXE client on the machine then gets the ipxe.pxe image via TFTP
  3. iPXE is executed and configures itself

Then you will be presented with the Fog boot menu:

Use your arrow keys to move the selection up and down. The default,
'boot from hard disk' is chosen in 3 seconds, so be quick.

In red you see the the statement that the host is NOT registered. It
means that the host is not known by Fog.

For capturing an image, you need the host to be registered, so choose
'Quick registration and inventory'.

You'll see some text scrolling on the screen as Fog registeres the


Then the client is rebooted. Shut down the computer.

Register the image at FOG

Log in on the Fog Web UI and go to 'Image Management' 'Create New


Give the new image a name and leave the chosen options as they are, and
clik on 'Add'.

The goal of this step is that you are registering a new image in Fog
(you can use manage multiple images). The image will be a copy of the
complete harddisk and all partitions on the harddisk will be captured
and deployed.

Associate the image with the machine

Now to go 'Host Management' 'List All Hosts' and click on the
machine you just have registered:


For now, the machine name is it's MAC address. Don't worry about that
now as we will only use this host for capturing an image.


For the 'Host Image' drop-down box, choose the image you've just
created. Then click on 'Update' in on the bottom of the screen.

You have now associated the Windows 10 image with this host.

Create a capture task

We are now going to make a 'capture taks' for this host. This task
instructs FOG that when this machine boots from the network, the
contents of the harddisk must be captured and stored as the 'Windows
10' image on the FOG server.

While still in the Host Management of this machine, go to 'Basic
Tasks' and choose 'Capture':


Here you can change settings of the imaging task.

Leave the options as they are and clik on 'Task':


A capture task is now created.

Capture the image

Now start your machine and make sure it boots from the network.

As an image capture task is assigned to this machine, the FOG boot menu
will not appear, but directly Partclone will be launched and the image
will be captured:

On the console of your machine you will first see that FOG is doing some
actions like resizing partitions and then Partclone will be executed:


The contents of the harddisk will be read and via the network written as
a compressed image file on the Fog server. Depending on the speed of
your network and computers this may take a while.

Partclone may be invoked a couple of times depending on the number of
partitions that need to be imaged.

When the capture has completed, FOG will update the database and the
machine will reboot.

Now you have captured an image that you can deploy easiliy on other
machines with FOG.

Last update: 2023-07-24