[gPXE] Near last step of flashing e1000 ROM with Wifi gPXE the USB stick won't boot

[Shao Miller]

On 8/3/2011 12:14, J C wrote:
> I tried creating a ROM to flash my Intel PRO/1000 MT NIC with gPXE a 
> wireless boot but I get stuck at creating a Boot Disk. I configured it 
> on Ubuntu 11. Below are the steps I use/d:
>
>     lspci
>     02:06.0 Ethernet controller: Intel Corporation 82540EM Gigabit 
> Ethernet Controller (rev 02)
>     lspci -n -s 02:06.0
>     02:06.0 0200: 8086:100e (rev 02)
>     #etherboot :http://etherboot.org/
> <gpxe1user> gpxebot: lspci 8086:100e
> <gpxebot> e1000_82540
>
> I downloaded the gpxe src and compiled it. I can create working ISO's 
> with it and can boot wirelessly with an embedded script. I used a CD. 
> Now I want to flash the ROM on my NIC with this script.
>
> cd Downloads/gpxe/src
> make bin/8086100e.rom EMBEDDED_IMAGE=wireless.gpxe
>
>     wireless.gpxe file contents:
>     #!gpxe
>     set net0/ssid MYWIFIAP
>     set net0/key MYWIFIKEY
>     autoboot
>
> cp bin/8086100e.rom bin/8086100e.iba
> # This is done to refresh with a clean "dosboot.img"
> cp /home/myfolder/Downloads/dosboot.img .
> mcopy -i dosboot.img bin/8086100e.iba ::
> # IBAUtil.exe was automatically extracted when I downloaded PROBOOT.exe
> mcopy -i dosboot.img /home/myfolder/Downloads/APPS_intel/IBAUtil.exe ::
>
> For USB stick, do this:
>     sudo dd if=dosboot.img of=/dev/sdc1
>
>     USB stick contents:
>
>     8086100e.iba
>     AUTOEXEC.BAT (0 bytes)
>     COMMAND.COM
>     CONFIG.SYS (0 bytes)
>     IBAUtil.exe
>     KERNEL.SYS
>
> For CD, do this, then burn ISO:
>     mkisofs -b dosboot.img -o dosboot.iso dosboot.img
>
>     CD contents after burning the ISO:
>
>     boot.cat
>     dosboot.img
>
> Neither USB stick nor CD work when booting. The screen is just black 
> with a blinking underscore. I've tried them both on several machines. 
> What can I do to get around this?

Everything looks good except...  What is 'dosboot.img'?  Where does it 
come from?  Does its vendor suggest that it can be DDd to any USB stick 
and that it should be expected to work with any BIOS?

- Shao Miller