About: E820

An Entity of Type: chemical compound, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org

e820 is shorthand for the facility by which the BIOS of x86-based computer systems reports the memory map to the operating system or boot loader. It is accessed via the int 15h call, by setting the AX register to value E820 in hexadecimal.It reports which memory address ranges are usable and which are reserved for use by the BIOS. BIOS-e820 is often the first thing reported by a booting Linux kernel, and it can also be seen with the dmesg command.

Property	Value
dbo:abstract	e820 is shorthand for the facility by which the BIOS of x86-based computer systems reports the memory map to the operating system or boot loader. It is accessed via the int 15h call, by setting the AX register to value E820 in hexadecimal.It reports which memory address ranges are usable and which are reserved for use by the BIOS. BIOS-e820 is often the first thing reported by a booting Linux kernel, and it can also be seen with the dmesg command. (en)
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dbo:wikiPageExternalLink	https://wiki.osdev.org/Detecting_Memory_(x86)%23BIOS_Function:_INT_0x15.2C_EAX_.3D_0xE820
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dbo:wikiPageWikiLink	dbr:Memory_map dbr:Linux_kernel dbc:BIOS dbr:Dmesg dbr:BIOS dbr:BIOS_interrupt_call dbr:Operating_system dbr:X86 dbr:INT_(x86_instruction) dbr:Boot_loader dbr:File:BIOS_e820_example_screenshot.png
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rdfs:comment	e820 is shorthand for the facility by which the BIOS of x86-based computer systems reports the memory map to the operating system or boot loader. It is accessed via the int 15h call, by setting the AX register to value E820 in hexadecimal.It reports which memory address ranges are usable and which are reserved for use by the BIOS. BIOS-e820 is often the first thing reported by a booting Linux kernel, and it can also be seen with the dmesg command. (en)
rdfs:label	E820 (en)
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prov:wasDerivedFrom	wikipedia-en:E820?oldid=1061216509&ns=0
foaf:depiction	wiki-commons:Special:FilePath/BIOS_e820_example_screenshot.png
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is foaf:primaryTopic of	wikipedia-en:E820

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