Advanced Boot Menu (F8)

[Andrew Burns]

As many us have I am deploying my device and must protect the
information. I have written a custom shell that will scan the process
list and if any 'unauthorized' processes are detected then the machines
goes into self protect mode and shuts down. I have successfully
disabled Ctrl+Alt+Del using the Auto login trick however there are two
things that exist that I would like to take care of:

F8 Menu (Safe Mode, etc..) Safe mode itself does not work and
bluescreens the machine (this is fine) But user can still select this
menu and do unknown potential damage to the unit.

If the left shift key is pressed at boot then it will bypass the
automatic login and a login screen will be presented. This is not a
huge issue.

Does anyone know how to disable these features? Thank you in advance.

 

[Andy Allred [MS]]

Hi Andrew,
F8 is available from the loader, I don't think you can 'unmap' that.
However, since you don't have the Safe Mode component and you verified the
machine bugchecks appropriately, there is no way for the user to have any
affect on the machine at that time. It's failing safely at that point of the
boot process when it tries to load the critical boot driver registry keys
(that are supplied by the Safe Mode component).

Don't know about the left shift key trick.
-andy

 

[dferencz]

Andrew,

Try adding a REG_SZ registry key "IgnoreShiftOverride" with a setting
of "1" in HKEY_LOCAL_MACHINE\Software\Microsoft\Windows
NT\CurrentVersion\Winlogon. (Courtesy
http://www.winguides.com/registry/display.php/946/ )

-- Don

 

[Andrew Burns]

Thank you Very much Don, that did the trick.

Funny thing is I accidently found the advice in a whitepaper buried on
MSDN that was talking about MSGINA functions.

However had I checked back earlier you would have beat me to it. Thanks
a ton for your response!!!

 

[Nikolai Vorontsov]

Hello Andrew,

Thank you Very much Don, that did the trick.

Does it work for the automatic logon only? Apparently the F8 key is
still active. Did you fix it somehow?

 

[Nikolai Vorontsov]

Hello Andrew,

Thank you Very much Don, that did the trick.

Does it work for the automatic logon only? Apparently the F8 key is
still active. Did you fix it somehow?