How to add /3GB to BOOT.INI in XP Home SP3 32-bit????

A

audiobahn1000

Member
I need to add the /3GB attribute to my BOOT.INI file because a program I am using requires more than 2 GB of memory. However there is no /3GB box to check under msconfig so how do I add the attribute so I can expend the max memory allocations for programs? I cannot find my boot.ini file to edit manually. It’s not located under C:/. I am viewing hidden files and folders. I did a Windows search and the only thing I got back was "boot.ini.backup".
 
You need to view protected system files. Then it will appear. Instead of editing the existing entry, make a copy and add the switch to that.

Does the application support more than 2GB?
 
I am not aware that applications have any limitations to how much RAM they can use. As far as I know Windows is the only program that limits how much RAM a program can use and it limits it at 2 GB unless you raise it to 3 like I am trying to do.

Also I am viewing hidden files and folders. When I did the search I checked the "search for hidden files and folders" and "search for system files" boxes.
 
Unless you untick "hide protected operating system files" in folder options, it will stay hidden. boot.ini resides in the root of the partition.

By default, an application is still confined to 2GB even with the /3gb flag. Is has to be marked "largeaddressaware", which is normally done by the developer.
 
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