15 lines
611 B
Markdown
15 lines
611 B
Markdown
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---
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title: "ext4 格式化以后有意料外的已用空间"
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date: 2021-03-25T12:09:43+08:00
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tags: []
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categories: []
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weight: 50
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show_comments: true
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draft: false
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---
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ext2/3 中格式化文件系统以后，会预留 5% 的空间，以便在空间耗尽以后，仍然可以保证系统的正常启动，允许系统管理员对系统进行维护。
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对于纯粹的存储用硬盘，这种预留不是必需的。
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[https://superuser.com/questions/575756/wrong-free-space-reported-for-an-ext4-formatted-3tb-drive](https://superuser.com/questions/575756/wrong-free-space-reported-for-an-ext4-formatted-3tb-drive)
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