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---
title: "UEFI Only"
type: concept
tags: [uefi, bios, boot, hp]
date: 2026-04-14
aliases: [UEFI Only 模式, UEFI Only Mode]
---
# UEFI Only
## Definition
BIOS/UEFI 固件中的一种启动模式设置,仅允许 UEFI 引导,跳过所有 Legacy/BIOS (BBS) 启动项。是 HP ZBook 等工作站解决"启动项混乱"问题的终极方案。
## The Problem: Hybrid Mode Pollution
HP ZBook 从 Legacy 或 Hybrid 模式切换到 UEFI 安装 Ubuntu 后BIOS 中会残留大量 `Boot0000-Boot0004` 类型的 BBS (BIOS Boot Specification) 遗留项,这些 Legacy 项会干扰 UEFI 启动项识别。
## The Solution
在 BIOS 设置中 (`Boot Options``Boot Mode`) 将 `Legacy``Hybrid` 切换为 `UEFI Only`
- 无效的 0000-0004 BBS 项自动消失
- BIOS 被迫只识别 UEFI 启动项
- BootOrder 中仅剩 0005 (Ubuntu)
## Side Effects
- 关闭 Legacy Support 后,机器无法从传统 MBR 磁盘启动
- 适用于纯 UEFI 环境(如现代工作站、服务器)
## Related
- [[HP ZBook]] — 受影响的硬件平台
- [[efibootmgr]] — 配合工具
- [[UEFI启动修复]] — 完整修复策略
- [[UEFI Only]] ← 解决 [[HP ZBook]] ← [[UEFI启动修复]]
## Sources
- [[安装ubuntu-24-04-2在hp-zbook工作站笔记本上]]