how to take control directly after the NTLDR loaded the SDIimg to

[Guest]

hi,
i want to execute certain binary file (which is available outside the sdi
image or inside it "it doesn't matter for me") directly after the NTLDR "nt
loader" loaded the sdi image to the RAM and before start executing the
windows inside the image.

in other words, i want the NTLDR to give me control directly after loading
the sdi image and before executing the windows inside the image then after my
binary code finish i want the NTLDR to continue its job normally.

please, give me clear and detaild answer as me question was very clear.

best regards,

 

[Sean Liming \(MVP\)]

There is nothing directly available to take control after NTLDR.

1. You could trick NTLDR to load your code as a launcher for the
HAL\kernel - a bit tricky at best.
2. Get the source code to NTLDR and make changes. Again, no small task.

What is it that you want the bianry code to do?

Regards,

Sean Liming
www.sjjmicro.com / www.seanliming.com
Book Author - XP Embedded Advanced, XP Embedded Supplemental Toolkit

 

[JS]

You could also use an open source boot loader to enable you to do operations
in a pre-boot environment.
And you could trap the bios INT13 monitor what ntldr is doing
(eg: when ntldr reads the last sector of the sdi image, invoke your code).

here is a useful thread: http://www.osronline.com/showThread.cfm?link=3841