/3GB Option

[former_member249185]

Dear Guys,

Please suggest me, I want to add /3GB option in boot.ini, but confuse in which line of boot.ini, I have to add this option. Can somebody copy/paste boot.ini in this message after adding /3GB option? Waiting for your valuable reply.

Thanking You.

Regards,

Charanjit Singh.

[Former Member]

The /3GB switch allocates 3 GB of virtual address space to an application that uses IMAGE_FILE_LARGE_ADDRESS_AWARE in the process header. This switch allows applications to address 1 GB of additional virtual address space above 2 GB.

The virtual address space of processes and applications is still limited to 2 GB, unless the /3GB switch is used in the Boot.ini file. The following example shows how to add the /3GB parameter in the Boot.ini file to enable application memory tuning:

[boot loader]

timeout=30

default=multi(0)disk(0)rdisk(0)partition(2)\WINNT

[operating systems]

multi(0)disk(0)rdisk(0)partition(2)\WINNT="????" /3GB

Note: "????" in the previous example can be the programmatic name of any of the following operating system versions:

Windows XP Professional

Windows Server 2003

Windows Server 2003, Enterprise Edition

Windows Server 2003, Datacenter Edition

Windows 2000 Advanced Server

Windows 2000 Datacenter Server

Windows NT Server 4.0, Enterprise Edition

http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx

Cheers,

Mustafa

[former_member249185]

Dear,

After adding /3GB paratmeter in boot.ini, my file shows like this. Is it ok ?

Thanking You,

Charanjit Singh

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 Server 2003, Standard" /fastdetect /NoExecute=OptOut /3GB /PAE

[Former Member]

Hello Charanjit ,

It seems it is ok , but please take assist of your System Admin .

Regards ,

Santosh

[Former Member]

Dear Charanjit ,

The /3GB startup parameter is a switch informing the operating system

to use only 1GB of memory for system addresses which then permits an

increase in the amount of user process space from the default of 2GB

to 3GB. This startup parameter is only available with the Advanced

Server or Datacenter Windows 2000 products. The /3GB startup

parameter switch should be enabled for systems with more than 2 GB of

physical memory on the computer and not more than 16 GB, as described

below. It is enabled in the boot.ini by adding it at the end of the

line that launches Windows 2000. Your Windows Administrator will know

how to do this.

More information on the /3GB and /PAE switches can be found in the

Microsoft Knowledge base article 283037. Most easily found by going

to http://www.support.microsoft.com and searching for KBA # 283037.

http://support.microsoft.com/kb/283037

How to edit the Boot.ini file in Windows Server 2003 >http://support.microsoft.com/kb/317526/

For eg :

example of a Boot.ini file where the PAE switch has been added:

[boot loader]

timeout=30

default=multi(0)disk(0)rdisk(0)partition(2)\WINDOWS

[operating systems]

multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="Windows Server 2003, Enterprise" /fastdetect /PAE

Regards ,

Santosh

[Former Member]

Check

http://support.microsoft.com/kb/283037

You may also look into sap note 110172