building a embedded image

[sharkey]

HI all

am new to embeddeed and have been asked by my company to build a image with
the following requirements
1 the image needs to boot quickly
2 i need to use ewf to protect the image but need to be able to write to a
regstry
key and one file.
3 I need to have our application installed in the image
4 I havew built a basic image with the explorer shella t the mometn and the
info template but cannot use cmd.exe how do i allow this as i cannot use
multiple shells

any halp and advice would be deeply appreciated

 

[Andrea]

Hi
I'm quite new to xpe too but I'm working with the tools since 2007 so now I
can give you some suggestion based on the steps I did from the totally
unknowing to a working image.
1) It depends seriously from the components you puts and how the image is
big: there's a tutorial in the help of xpe that explain many ways for
decrease image footprint and optimize boot times. personally I started from a
boot time of 55 seconds and now the system boot in 25 seconds, using the
advices in the help. you can navigate also xpe forums finding tips about
disabling features like PnP and other...
2)Ewf is quite easy to use: just put components that add the ewf feature to
your run-time image and, another time, read the help; it is important to know
difference from ewf and fbwf and if you are planning to use them integrated
in the application or not ( API).
3)Easy: just remember to find out the app requirement in respect to sytem
and components. there's a lot of way to find the components needed to run
your app.
4)You have to find the component related to CMD.exe that is windows command
processor, but please don't forget to put in the image the possibility to
enter it maybe using the run command (in the user interface core!)

an advice that I can give you is using a design template, because it solves
a lot of problem in future develpment and debugging!

I'm developing an image similar to what you are doing now, so if you want I
can help with suggestion, but please remember that I'm not a "GURU", so, for
particular problems, ask the forum!

Good luck!

Anakin

 

[sharkey]

Hi Andrea thanks for your reply

Have added cmd thanks for your help have been looking at the ewf. At the
moment am using a disk based filter and am able to add file entries to the
protected volume am however not sure how to add changes to the registry. The
requirement from my boss is that only these two items are copied to the
protected voume and that after reboot the overlay needs to be empty again. In
cannot risk however loosing information which is why I cannot use a ram based
ewf (I think )

yours sincerely
Sharkey
(Paduwan)