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00a98a120d
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2 changed files with 71 additions and 11 deletions
38
.obsidian/workspace.json
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38
.obsidian/workspace.json
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@ -13,15 +13,30 @@
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"state": {
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"state": {
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"type": "markdown",
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"type": "markdown",
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"state": {
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"state": {
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"file": "LF1-Unternehmen/L24-11-28.md",
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"file": "ArbeitsplatzZeug/Präsentation Bios-Uefi.md",
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"mode": "source",
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"icon": "lucide-file",
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"icon": "lucide-file",
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"title": "L24-11-28"
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"title": "Präsentation Bios-Uefi"
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}
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},
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"state": {
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"type": "markdown",
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"state": {
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"file": "ArbeitsplatzZeug/bios-uefi infos.md",
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"mode": "source",
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"source": false
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},
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"icon": "lucide-file",
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"title": "bios-uefi infos"
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}
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}
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}
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@ -163,16 +178,17 @@
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"LF1-Unternehmen/L24-11-28.md",
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"LF1-Unternehmen/L24-11-26.md",
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"ArbeitsplatzZeug/Präsentation Bios-Uefi.md",
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"ArbeitsplatzZeug/uefi infos.md",
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"ArbeitsplatzZeug/Planung.md",
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"ArbeitsplatzZeug/Planung.md",
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"ArbeitsplatzZeug/uefi infos.md",
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"ArbeitsplatzZeug/bios-uefi infos.md",
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"ArbeitsplatzZeug/Präsentation Bios-Uefi.md",
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"LF1-Unternehmen/L24-11-28.md",
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"LF1-Unternehmen/L24-10-10.md",
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"LF1-Unternehmen/L24-11-26.md",
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"ArbeitsplatzZeug/SoftwareLayers.png",
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"ArbeitsplatzZeug/Uefi-Bios-Präsentation-Idee.md",
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"ArbeitsplatzZeug/PC_systemLayers.jpg",
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"ArbeitsplatzZeug/PC_systemLayers.jpg",
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"LF5-databases/Drawing 2024-11-26 11.15.51.excalidraw.md",
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"LF5-databases/Drawing 2024-11-26 11.15.51.excalidraw.md",
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"LF5-databases/A24-11-24 Selektionen.sql",
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"LF5-databases/A24-11-24 Selektionen.sql",
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44
ArbeitsplatzZeug/bios-uefi infos.md
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44
ArbeitsplatzZeug/bios-uefi infos.md
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## General
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- 2. Softwareebene nach Firmware, vor Bootloader und OS
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- Initialisierung der Hardware
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- Funktionalitäts- und Kompatibilitätscheck der Hardware
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- Laden und Starten des Bootloaders
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- Hardware Konfiguration
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- CPU Microcode Updates
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- Minimale API für Hardware-Zugriff
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## BIOS
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- BIOS / Basic Input/Output System
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- Nur MBR
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- 8 / 16 Bit
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- Assembly
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- Jeder sein eigenes
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- Keine modernen OS (außer Linux)
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## UEFI
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- UEFI / Unified Extensible Firmware Interface
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- Nachfolger von BIOS
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- MBR & GPT
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- MBR
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- Master Boot Record
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- nur erster Sektor
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- Partitionstabelle
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- Anweisungen um Bootloader zu starten
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- Max 2TB Partitionsgröße
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- GPT
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- GUID Partition Table
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- Max 8ZiB Partitionsgröße (2^64 * 512Byte Sektorgröße)
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- MBR in ersten Sektor
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- Grobe Definition der Partitionen
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- Genaue Details der Partitionen
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- 32 / 64 Bit
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- C
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- Meisten die gleiche Basis
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- Intel ~1998 für Itanium entwickelt um Bios zu ersetzen
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- 1990 Itanium, mit Bios unzufrieden
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- 1998 Intel Boot Initiative
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- 2004 Tiano (OSS UEFI)
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- 2005 UEFI Spec an UEFI Forum übergeben
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- Boot & Runtime Services
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- Boot services nur für Firmware und bevor OS (Beendet durch `ExitBootServices()`)
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- Backwards Compatibility via CSM (Compatibility Support Module)
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- Viele mittlerweile wichtige Features, z.B. Secure Boot
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