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wiki/concepts/GPT.md
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wiki/concepts/GPT.md
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title: "GPT"
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type: concept
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tags: [partition-table, uefi, storage]
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date: 2026-04-16
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---
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## Aliases
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- GPT
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- GUID Partition Table
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- GUID 分区表
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## Definition
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GPT(GUID Partition Table)是一种现代硬盘分区表标准,作为 MBR 的替代方案,支持 2TB 以上大容量硬盘,与 UEFI 引导完美兼容。
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## Key Properties
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- 最大支持容量:理论上无限(实际受操作系统限制)
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- 分区数量:理论上最多 128 个主分区
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- 唯一标识:每个分区有唯一的 GUID 标识符
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- 冗余:GPT 头部信息在磁盘末尾有备份
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## Use Cases
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- UEFI 系统安装(如 Ubuntu 24.04 在 HP ZBook)
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- 大容量硬盘分区(>2TB)
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- 现代工作站和服务器
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## Connections
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- [[GPT]] ← works_with ← [[UEFI]]
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- [[GPT]] ← used_by ← [[Bootable USB]]
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