Specifications
Remote Booting Linux on Intel Processors (CERN Variant)
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8254x.img boot image for boards fitted with the 8254x Ethernet controller.
21143.img boot image for boards fitted with 21143 Ethernet controller.
82559er.img boot image for boards fitted with 82559er Ethernet controller.
flash.exe DOS utility used to program the boot image into Flash memory.
The Concurrent Technologies Etherboot extensions package is available upon request, and we describe its
installation and use here with the “RamDisk Only” example above.
Installation
The Etherboot Extentions software is provided as a boot image file which is programmed into the
first sector of the on-board Flash memory. This may be done as follows:
• Boot the board using DOS.
• Insert the Etherboot Extensions disk into the floppy drive.
• Select the appropriate boot image for your board; See above. Consult the board’s manual
if you are unsure which Ethernet controller your board has installed.
• Run the flash.exe utility program as follows:
flash -W <boot.img> where <boot.img> is the selected boot image file.
Using Etherboot Extensions
Once the boot image has been programmed into Flash memory, the board should be configured to use
the Flash ROM disk as follows:
• Re-boot the board and enter the BIOS Setup by pressing the 'F2' key.
• When the BIOS Setup screen is displayed select Main Options.
• Scroll down the screen and change either the “Flash ROM Disk” option from 'None' to 'Flash
Disk' or the “ROM/RAM Disk (A:)” option from ‘None’ to ‘ROM Disk’
• Save Changes and Exit the BIOS Setup.
The board will now re-boot and load the boot image from Flash memory.
First the normal Etherboot messages are displayed along with the board type and Flash device
details. Next the following prompt is displayed:
Boot from (N)etwork Network and (S)ave (D)isk Fl(a)sh (F)loppy or from (L)ocal?
This allows you to select one of the six available options by pressing the ‘n’, ‘s’, ‘d’, ‘a’, ‘f’ or ‘l’
key. If an option is not selected within a short period the default Flash boot is performed.
Each option is described below:
(N)etwork : Performs a remote boot of an operating system via the network.
(S)ave : Performs a remote boot of an operating system via the network and saves the
downloaded image to Flash memory.
(D)isk : Performs a boot of an operating system from Disk
Fl(a)sh : Performs a boot of an operating system from the Flash memory
(F)loppy : Performs a boot of an operating system from Floppy