opsi Version 3.3.1 - opsi Download - uib

5. Netboot products: Automated OS installation and more
Copy the installation file: The files required for OS installation and the setup files for
the opsi-PreLoginLoader (which is the opsi software distribution pack) will be copied
from the server file share (e.g. /opt/pcbin/install/winxppro/i386) to the local hard disk.
Maintain the configuration informations: Some of the configuration and control files
contain replacement characters, which will be patched before starting the actual
installation. With a specified script (patcha-script) the placeholders will be replaced with
parameters taken from the information packet, which is built from configuration files and
the dhcp-response. For example the file 'unattend.txt', which is the control file for
unattended OS Installation, will be patched with specific information like host IP, client
IP, client name, workgroup, default gateway etc..
Prepare Reboot: Bootrecords will be installed which will start the Windows setup
program at the next reboot. The patched 'unattend.txt' is passed to the setup as the
control file for unattended installation.
Depot-Server
/tftpboot/linux
/pxelinux.cfg
/default
(Default = hdboot)
dhcp-request
Figure 23: After preparation of the bootimage the computer starts from local disk and
installs the operating system and the opsi-PreLoginLoader
Reboot: During the previous boot, the named pipe (which is indicating a request for
installation) has been removed by reading it once. So the next PXE boot will load the
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PC/Client
PC reboot
PC boot local
start setup-program
Last command:
Installation preloginloader