All of this depends on chipset specific methods, and is usually documented in the datasheets for the memory controller Most BIOSes can't use any RAM until they detect the type of RAM installed, then detect the size of each memory module, then configure the chipset ![]() It is perfectly reasonable to say to yourself, "How does the BIOS detect RAM? I'll just do it that way." Unfortunately, the answer is disappointing: ![]() There may be rare machines where you have no other choice but to try to detect memory yourself - however, doing so is unwise in any other situation. One of the most vital pieces of information that an OS needs in order to initialize itself is a map of the available RAM on a machine.įundamentally, the best way an OS can get that information is by using the BIOS. Please improve the article by adding information on neglected viewpoints. This article may be unbalanced towards certain viewpoints.
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