4gb(or more) memory problem with 32-bit systems

seristi

I am currently using 32-bit vista and i have 4gb of memory, the problem is approx. 1gb of memory is wasted because there are 2^32=4gb unique adress space available and MMIO reserves some of the this space depending on which devices you use , I was searching a solution for this problem and i found that there is a feature called Physical Address Extension(PAE) developed by microsoft. By using this feature, 32-bit systems can use more than 4gb of memory.
For people having the same problem here is the solution.

The Operating System that supports PAE are:
Windows Server 2008 (32-bit only)
Windows Vista (32-bit only)
Windows Server 2003 (32-bit only)
Windows XP (32-bit only)
Windows 2000 Datacenter Server
Windows 2000 Advanced Server

if you have one of the operating systems above, you just have to enable the feature because it is disabled by default. To enable it:

click Start, click Run, type cmd
and type "BCDEdit /set PAE forceenable" in the command line
All done

Donutey

seristi

Yes you're right, thanks for the correction.

awazdohamko2004

polly-gone

Wow! Thank you so much! I HATED wasting 0.8GB of my RAM that I could be putting to good use. I mean, that's almost as much as putting a brand new 1GB stick in and is way for than a new 512MB stick!

-Nick Smile

Jean-Clod

(I'm sorry if I am offtopic, but what exactly is DEP? I did actually think I knew what it is, but what's the link with CPU supporting it? Hum, sounds like I didn't understand anything Confused

Thanks for the answer!)

Jase

Really? If this works flawlessly for me then there might be no point in getting x64.. 32-bit would probably have better application compatibility. Not to mention I THINK it takes a little less hard drive space.

mOrpheuS

I'd recommend reading this excellent blog post on the topic and the official page before making claims that may not be entirely correct.

menino

Thanks for the tip, but I think for Windows 2003 server it is as follows :-
bootcfg /raw "/pae" /A /ID 1

and for SQL 32 bit, I need to find that out.

bukaida

I am having windows XP with SP2 (ver 5.1.2600). When I am typing BCDEdit /set PAE forceenable and pressing enter key, it is saying that BCDEdit is not recognized as internal or external command. What to do?

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