{"id":1527,"date":"2023-04-29T11:44:40","date_gmt":"2023-04-29T09:44:40","guid":{"rendered":"http:\/\/news.computerservice.arminfischer.com\/?p=1527"},"modified":"2023-04-29T12:54:19","modified_gmt":"2023-04-29T10:54:19","slug":"was-ist-uefi","status":"publish","type":"post","link":"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/","title":{"rendered":"Was ist UEFI? \/ What is UEFI?"},"content":{"rendered":"\n<p>Was ist UEFI? \/ What is UEFI? | http:\/\/news.computerservice.arminfischer.com\/1527 . <br><br><a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/uefi\/\">#UEFI<\/a> <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/bios\/\">#BIOS<\/a> <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/unifiedextensiblefirmwareinterface\/\">#UnifiedExtensibleFirmwareInterface<\/a> <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/basicinputoutputsystem\/\">#BasicInputOutputSystem<\/a> <br><a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/computer\/\">#Computer<\/a> <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/mainboard\/\">#Mainboard<\/a> <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/computerservice\/\">#Computerservice<\/a> #Computerservicearminfischercom <br><a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/memmelsdorf\/\">#Memmelsdorf<\/a> #GemeindeMemmelsdorf <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/bamberg\/\">#Bamberg<\/a> #LandkreisBamberg<br><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">Was ist UEFI? \/ What is UEFI? | http:\/\/news.computerservice.arminfischer.com\/1527 . \n\n#UEFI #BIOS #UnifiedExtensibleFirmwareInterface #BasicInputOutputSystem \n#Computer #Mainboard #Computerservice #Computerservicearminfischercom \n#Memmelsdorf #GemeindeMemmelsdorf #Bamberg #LandkreisBamberg #GUID #MBR #SecureBoot<\/pre>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#DE\" >DE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#Was_ist_UEFI\" >Was ist UEFI?<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#MBR_und_GUID\" >MBR und GUID<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#SecureBoot\" >SecureBoot<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#EN\" >EN<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#What_is_UEFI\" >What is UEFI?<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#MBR_and_GUID\" >MBR and GUID<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#SecureBoot-2\" >SecureBoot<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#Ihr_braucht_Hilfe\" >Ihr braucht Hilfe ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#You_need_help\" >You need help?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#Computerservicearminfischercom\" >Computerservice.arminfischer.com<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/computerservice.arminfischer.com\/news\/1527\/was-ist-uefi\/#Computerservicearminfischercom_officearminfischercom_4917621008967\" >Computerservice.arminfischer.com  office@arminfischer.com   +4917621008967<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DE\"><\/span><br>DE <span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Was_ist_UEFI\"><\/span>Was ist UEFI?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>UEFI steht f\u00fcr \u201eUnified Extensible Firmware Interface\u201c, was soviel hei\u00dft wie<br>&#8220;Einheitliche erweiterbare Firmware Schnittstelle&#8221;.<br>UEFI ist der Nachfolger BIOS.<br>BIOS steht f\u00fcr &#8220;Basic Input Output System&#8221;, &#8220;Grunds\u00e4tzliches Ein- Ausgabe System&#8221;. <\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"MBR_und_GUID\"><\/span>MBR und GUID <span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>UEFI unterst\u00fctzt neben dem MBR MasterBootrecord Festplattentabelle auch GUID . <br>GUID Formatierte Festplatten sind unter Einschr\u00e4nkungen auch auf \u00e4lteren rechnern mit BIOS <br>verwendbar. GUID ist auch notwendig, da das \u00e4ltere MBR Verfahren nur bis maximal 2 Terrabyte <br>unterst\u00fctzt. <br>Der UEFI Chip sitzt am Mainboard meist in der N\u00e4he der CPU. <br>Im Gegensatz zu den \u00e4lteren BIOS haben viele UEFI sogar eine grafische Benutzeroberfl\u00e4che und k\u00f6nnen mit der Maus bedient werden. <\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SecureBoot\"><\/span>SecureBoot <span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Wichtiger Bestandteil des UEFI, das Nutzern von Linux und Computerservice Spezialisten viel Kopfweh machen kann, ist SecureBoot. SecureBoot verhindert das Starten von nicht signierten Alternativ-Betriebssystemen. <br>Verhindert werden soll unter anderem, dass von Dritten durch Fremdstarten Viren eingeschleust werden k\u00f6nnen. <br>So wie es aktuell ist, werden die Zertifikate nur von Microsoft ausgestellt, was auch hei\u00dft, dass nur das gebootet werden kann, was Microsoft will. Aktuell haben jedoch die meisten Linux-Varianten ein Zertifikat zum Booten, <br>z.B. LinuxMint , Kubuntu, Ubuntu und viele anderen. <br>SecureBoot l\u00e4sst sich auch ausschalten, allerdings kann je nach UEFI, dann eventuell nicht mehr von der mit SecureBoot installierten Windows-Partition gebootet werden. Teilweise kann dann auf die Partition auch nicht zugegriffen werden. <br>Manche Software wie Memtest86+ , die kostenlos ist, und von vielen Computerservices als Software zur Speicher\u00fcberpr\u00fcfung verwendet wird, hat keinen solchen Header mit Zertifikat. Das zwingt uns dann, SecureBoot vor\u00fcbergehend auszuschalten.  <\/p>\n\n\n\n<p><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"EN\"><\/span>EN <span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_UEFI\"><\/span>What is UEFI? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>UEFI stands for &#8220;Unified Extensible Firmware Interface&#8221;.<br>&#8220;Unified Extensible Firmware Interface&#8221;.<br>UEFI is the successor to BIOS.<br>BIOS stands for &#8220;Basic Input Output System&#8221;. <br><\/p>\n\n\n\n<p>The UEFI chip is usually located on the motherboard near the CPU.<br>In contrast to the older BIOSes, many UEFIs even have a graphical user interface and can be operated with the mouse. <\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"MBR_and_GUID\"><\/span>MBR and GUID<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>UEFI supports besides the MBR MasterBootrecord hard disk table also GUID .<br>GUID formatted hard disks are under restrictions also on older computers with BIOS<br>usable. GUID is also necessary, since the older MBR procedure supports only to maximally 2 Terrabyte<br>is supported.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SecureBoot-2\"><\/span>SecureBoot<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Important component of the UEFI, which can give Linux users and computer service specialists a lot of headaches, is SecureBoot. SecureBoot prevents unsigned alternative operating systems from booting.<br>Among other things, it is intended to prevent third parties from introducing viruses by means of third-party booting.<br>As it is currently, the certificates are only issued by Microsoft, which also means that only what Microsoft wants can be booted. Currently, however, most Linux variants have a certificate to boot,<br>e.g. LinuxMint , Kubuntu, Ubuntu and many others.<br>SecureBoot can also be switched off, but depending on the UEFI, it may no longer be possible to boot from the Windows partition installed with SecureBoot. Sometimes the partition can&#8217;t be accessed either.<br>Some software like Memtest86+ , which is free of charge and is used by many computer services as memory checking software, does not have such a header with certificate. This then forces us to temporarily disable SecureBoot.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"http:\/\/news.computerservice.arminfischer.com\/wp-content\/uploads\/2023\/04\/news-WasistUEFI-1024x640.jpg\" alt=\"Was ist UEFI? What is UEFI? news.computerservice.arminfischer.com\" class=\"wp-image-1530\" srcset=\"https:\/\/computerservice.arminfischer.com\/news\/wp-content\/uploads\/2023\/04\/news-WasistUEFI-1024x640.jpg 1024w, https:\/\/computerservice.arminfischer.com\/news\/wp-content\/uploads\/2023\/04\/news-WasistUEFI-600x375.jpg 600w, https:\/\/computerservice.arminfischer.com\/news\/wp-content\/uploads\/2023\/04\/news-WasistUEFI-300x188.jpg 300w, https:\/\/computerservice.arminfischer.com\/news\/wp-content\/uploads\/2023\/04\/news-WasistUEFI-768x480.jpg 768w, https:\/\/computerservice.arminfischer.com\/news\/wp-content\/uploads\/2023\/04\/news-WasistUEFI-1536x960.jpg 1536w, https:\/\/computerservice.arminfischer.com\/news\/wp-content\/uploads\/2023\/04\/news-WasistUEFI.jpg 1680w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><br>Referring articles\/ Bezugnehmende Artikel:<br><a href=\"https:\/\/de.wikipedia.org\/wiki\/Unified_Extensible_Firmware_Interface\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-color\">https:\/\/de.wikipedia.org\/wiki\/Unified_Extensible_Firmware_Interface<\/mark><\/a> <br><a href=\"https:\/\/de.wikipedia.org\/wiki\/GUID_Partition_Table\" target=\"_blank\" rel=\"noreferrer noopener\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-accent-color\">https:\/\/de.wikipedia.org\/wiki\/GUID_Partition_Table<\/mark><\/a> <\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ihr_braucht_Hilfe\"><\/span>Ihr braucht Hilfe ? <span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"You_need_help\"><\/span>You need help? <span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h3 class=\"wp-block-heading has-large-font-size\"><span class=\"ez-toc-section\" id=\"Computerservicearminfischercom\"><\/span>Computerservice.arminfischer.com <span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"486\" height=\"143\" src=\"http:\/\/news.computerservice.arminfischer.com\/wp-content\/uploads\/2023\/01\/cropped-computerservicearminfischercom-302-2quadrat.jpg\" alt=\"Computerservice.arminfischer.com office@arminfischer.com +4917621008967\" class=\"wp-image-14\" srcset=\"https:\/\/computerservice.arminfischer.com\/news\/wp-content\/uploads\/2023\/01\/cropped-computerservicearminfischercom-302-2quadrat.jpg 486w, https:\/\/computerservice.arminfischer.com\/news\/wp-content\/uploads\/2023\/01\/cropped-computerservicearminfischercom-302-2quadrat-300x88.jpg 300w\" sizes=\"auto, (max-width: 486px) 100vw, 486px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Computerservicearminfischercom_officearminfischercom_4917621008967\"><\/span>Computerservice.arminfischer.com <br>office@arminfischer.com  <br>+4917621008967  <span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>ServicePoint DE- 96117 Memmelsdorf<\/p>\n\n\n\n<p>Computerservice.arminfischer.com  <br>c\/o Armin Fischer <br>Hauptstr.70  <br>DE- 96117 Memmelsdorf <br><br>Ust-ID \/ VAT-ID: DE232723558&nbsp;  <br><br>Bring-In <br>On-Site-Service \/ Vor-Ort-Service Gemeinde Memmelsdorf <br>Helpdesk <br>Webdesign <br><br>Helpdesk for Care \/ Helpdesk f\u00fcr die Pflege . <\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><br><br><a href=\"http:\/\/Computerservice.arminfischer.com\" target=\"_blank\" rel=\"noreferrer noopener\">Computerservice.arminfischer.com<\/a> &#8211; <a href=\"http:\/\/Computerservice.arminfischer.com\/chatus\/\" target=\"_blank\" rel=\"noreferrer noopener\">Chatus<\/a> &#8211;  <a href=\"https:\/\/newsComputerservice.arminfischer.com\" target=\"_blank\" rel=\"noreferrer noopener\">news.Computerservice.arminfischer.com<\/a>  <br><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p>Keywords: <br>UEFI , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/bios\/\">#BIOS<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/unifiedextensiblefirmwareinterface\/\">#UnifiedExtensibleFirmwareInterface<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/basicinputoutputsystem\/\">#BasicInputOutputSystem<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/computer\/\">#Computer<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/mainboard\/\">#Mainboard<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/computerservice\/\">#Computerservice<\/a> , #Computerservicearminfischercom , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/memmelsdorf\/\">#Memmelsdorf<\/a> , #GemeindeMemmelsdorf , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/bamberg\/\">#Bamberg<\/a> ,<br>#LandkreisBamberg , UEFI , BIOS , UnifiedExtensibleFirmwareInterface , Unified Extensible Firmware Interface, BasicInputOutputSystem , Basic Input Output System,  Computer , Mainboard , Computerservice , Computerservicearminfischercom , Memmelsdorf , GemeindeMemmelsdorf , Gemeinde Memmelsdorf, Municipality Memmelsdorf, Bamberg, LandkreisBamberg , Landkreis Bamberg, <\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Hashtags: <br>UEFI , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/bios\/\">#BIOS<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/unifiedextensiblefirmwareinterface\/\">#UnifiedExtensibleFirmwareInterface<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/basicinputoutputsystem\/\">#BasicInputOutputSystem<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/computer\/\">#Computer<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/mainboard\/\">#Mainboard<\/a> , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/computerservice\/\">#Computerservice<\/a> , #Computerservicearminfischercom , <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/memmelsdorf\/\">#Memmelsdorf<\/a> , #GemeindeMemmelsdorf , <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Was ist UEFI? \/ What is UEFI? | http:\/\/news.computerservice.arminfischer.com\/1527 .  <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/uefi\/\">#UEFI<\/a> <a href=\"https:\/\/computerservice.arminfischer.com\/news\/tag\/bios\/\">#BIOS<\/a> . 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