"Umut Alev - MSFT" <xml@m...> wrote in message
news:eL%23iawl0GHA.1304@T......
> In boot.ini you can add /3G to your nt loader options similar to below
>
> ;
> ;Warning: Boot.ini is used on Windows XP and earlier operating systems.
> ;Warning: Use BCDEDIT.exe to modify Windows Vista boot options.
> ;
> [boot loader]
> timeout=30
> default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
> [operating systems]
> multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows XP" /NOEXECUTE=OPTIN
> /FASTDETECT /3G
>

I you are compling an app it needs the large address awareness flag
otherwise the process is still only given the 2GB user space.  In C++ use
/LARGEADDRESSAWARE switch on the linker.


>
> -- 
> Regards,
> - Umut Alev [MSFT]
>
> This email sent from a machine running Vista RC1.
>
>
> "Vivek" <vivekd@o...> wrote in message
> news:44f9829d$0$11968$afc38c87@n......
> > Hi,
> >
> > I am using x86, 4GB physical memory. What is the /3G flag? Can you
please
> > clarify that? Thanks...
> >
> > Yes, it is the same issue, they are related I have just realised.
> >
> >
> > Regards,
> >
> > Vivek
> >
> >
> > Umut Alev - MSFT wrote:
> >> Yes you would see some trashing and eventually you would start getting
> >> E_OUTOFMEMORY.
> >>
> >> Are you running under x86 or x64? Usually x86 can only see upto 2GB
after
> >> that you need to turn on /3G flag. To access full 4GB you need to
switch
> >> to x64.
> >>
> >> I have read your get_xml question. Is this the same issue?
> >>
>