Hardware profiles and EWF

  • Thread starter Thread starter kg
  • Start date Start date
K

kg

Hi,
I have a few questions on a topic I've seen little discussion on
before.

How do you (if possible) make multiple hardware profiles in XP embedded
so that the user can select seperate ones during startup? I'm looking
for how to do this in the Target Designer.

And the reason I want this is for using with EWF. I want to use EWF to
protect my CF card from being written to during normal operation, but
sometimes there is need for changing some settings like IP address etc,
hence I need to disable the EWF.

Now I know that in XPE the write filter is more powerfull/better
(enhanced) than for NT and that you don't need to use hardware profiles
for what I need. You have commands to disable it. But according to the
documentation you still have to reboot the system between each
disable/enable of the EWF, so from a user perspective wouldn't it be
simpler to just use hardware profiles to select from instead of
"disable ewf, reboot, change settings, enable ewf, reboot"?

Thanks for any input.
 
kg said:
profiles for what I need. You have commands to disable it. But
according to the documentation you still have to reboot the system
between each disable/enable of the EWF, so from a user perspective
wouldn't it be simpler to just use hardware profiles to select from
instead of "disable ewf, reboot, change settings, enable ewf,
Click to expand...

In deed you don't need to have HWprofiles to switch between filter and
non-filtered mode. By switching within the running windows you can now
administrate the system completely by remote control.
Also you don't have to reboot many times if you like to do some
(setting) changes in a running and EWFiltered system: just do a "commit"
so all the changes for this session will be saved persistently and the
system will be again in the WriteFilter-protected mode when being
rebooted....
 
So maybe I have misunderstood a little how the EWF works. Say under
normal operation the EWF is enabled. If I then want to change the
static IP address of the system I have to:

1. Disable EWF (EwfMgr c: -disable)
2. Reboot for this command to take effect
3. Change the IP address now that EWF is disabled
4. Enable EWF (EwfMgr c: -enable)
5. Reboot for this command to take effect

Are there any better ways of doing this?
 
kg said:
1. Disable EWF (EwfMgr c: -disable)
2. Reboot for this command to take effect
3. Change the IP address now that EWF is disabled
4. Enable EWF (EwfMgr c: -enable)
5. Reboot for this command to take effect
Are there any better ways of doing this?
Click to expand...

Yes, do a ewfmgr c: -commit while being in enabled state.
 
OK, had a suspision that there was a simpler way. So the correct
procedure would be:

1. Change the IP address (EWF is enabled)
2. Do a commit (ewfmgr c: -commit)
3. Reboot for this command to take effect

So I'm down to one reboot which is much better. Is there a way to clear
the overlay cache before step 1 so that only the change of IP address
gets written to disk? (would it possible be: ewfmgr SetLevel -1)

Thanks again for the useful input!
 
kg said:
So I'm down to one reboot which is much better. Is there a way to clear
the overlay cache before step 1 so that only the change of IP address
gets written to disk? (would it possible be: ewfmgr SetLevel -1)
Click to expand...

That would be an interesting question for me, too...
MS, Mr. Slobodan?
 
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