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I have a Dell Optiplex 745 with 4GB of RAM; Win XP Pro only sees 3GB.<br />
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Will adding the /3GB switch in the boot.ini file resolve this issue? &nbsp;IF not what else would I change?<br />
<br />
Is there a downside in trying to get this last 1GB of RAM?
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I have a Dell Optiplex 745 with 4GB of RAM; Win XP Pro only sees 3GB.

Will adding the /3GB switch in the boot.ini file resolve this issue?  IF not what else would I change?

Is there a downside in trying to get this last 1GB of RAM?

Dell Optiplex 745 with 4GB of RAM; Win XP Pro only sees 3GB.

Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.

Operating Systems

Microsoft Windows XP is the sixth release of the NT series of operating systems, and was the first to be marketed in a variety of editions: XP Home and XP Professional, designed for business and power users. The advanced features in XP Professional are generally disabled in Home Edition, but are there and can be activated. There were two 64-bit editions, an embedded edition and a tablet edition.

Windows XP

Hardware includes cell phones and other digital living devices, tablets, computers, servers, peripherals and components, printers and scanners, gaming consoles, networking hardware such as routers, hubs, switches and modems, storage devices and security equipment such as firewalls and other appliances.