您是否曾经在您的计算机中四处寻找并发现您不知道存在的分区或磁盘卷？^{(partitions or disk volumes)}或者，您是否注意到Windows安装会产生两个分区？一个大的和一个小的？较小的大小为 100 MB 或 600 MB。那是什么？你需要它吗？嗯，它是EFI分区，简短的回答是肯定的，你确实需要它。

Windows 10 中的 EFI 分区是什么？^{(What Is The EFI Partition in Windows 10?)}

我们说Windows 10，但EFI分区已成为以前版本的Windows的一部分，也是其他操作系统 (OS) 的一部分，例如Linux和macOS。

EFI 代表可扩展固件接口^{(Extensible Firmware Interface)}。顾名思义，EFI将操作系统连接到计算机中硬件组件的固件。将固件^(Think)视为每个硬件的大脑。名称的可扩展部分告诉我们，EFI可以针对不同的情况进行更改。

如今，大多数 Windows 设备都使用UEFI BIOS（Unified Extensible Firmware Interface Basic Input/Output System）。很容易找到适合您计算机的 BIOS 版本。^{(find the BIOS version)}只有使用UEFI BIOS^{(UEFI BIOS)}的 Windows 设备才有EFI分区。非 U EFI BIOS Windows系统在主​​分区中包含引导信息。

当我们启动计算机时，Windows不会立即启动。首先^(First)，启动BIOS。什么是 BIOS^{(What is the BIOS)}？这是一个存在于芯片上的最小操作系统。它唤醒硬件和固件。然后BIOS查找EFI分区以获取有关启动和与Windows交互的说明。 

EFI分区包含基本文件和实用程序，例如：

• 引导加载程序^{(Boot loaders)}：启动引导过程、系统实用程序、设备驱动程序并确保它们一起工作。
• 设备驱动程序^{(Device drivers)}：告诉 Windows 如何与不同的硬件组件通信。
• 数据文件^{(Data files)}：保存有关引导过程和相关日志的信息。
• 系统实用程序^{(System utilities)}：帮助启动和运行Windows的小程序。
• BitLocker 数据^{(BitLocker data)}：如果使用 BitLocker 加密驱动器，秘密将存储在这里，它会与TPM（受信任的平台模块）交互以对驱动器进行加密和解密。您可能听说过Windows 11需要TPM 2.0。

成功找到EFI分区并且启动过程正常后，Windows将启动。

我应该删除 EFI 分区吗？^{(Should I Delete the EFI Partition?)}

如果您看到EFI分区并想：“我的计算机可以使用额外的 100 MB。让我们删除它。”，不要那样做。Windows在使删除^(Windows)EFI分区变得困难方面做得很好。但你可以做到。如果没有EFI，BIOS会认为Windows不存在，计算机将无法正常启动。另外，获得额外的 100 MB可用驱动器空间^{(free drive space)}重要吗？在云存储^{(cloud storage)}和便宜的 1TB+ 驱动器之间，我们不需要 100 MB。随它去。

Windows 10 中的 EFI 分区在哪里？^{(Where Is the EFI Partition In Windows 10?)}

如果您在File Explorer^{(File Explorer)}中寻找EFI分区，您可能找不到它。EFI分区很有价值，所以它是隐藏的。但这并不难找到。

使用磁盘管理查找 EFI 分区^{(Use Disk Management to Find the EFI Partition)}

磁盘管理^{(Disk Management)}是一个Windows实用程序，用于对磁盘进行分区、调整大小、重命名和格式化^{(formatting disks)}。

1. 选择开始^{(Start )}按钮并开始输入disk。选择选项创建和格式化硬盘分区^{(Create and format hard disk partitions)}。

1. 当磁盘管理^{(Disk Management )}打开时，EFI分区应该是可见的。

如何查看 EFI 分区中的内容？^{(How Can I See What’s In The EFI Partition?)}

您可以使用命令提示符^{(Command Prompt)}查看EFI分区的内容。不过，它有点复杂，而且不容易导航。如果您真的对EFI分区中的内容感到好奇，请下载Minitool Partition Wizard。免费。

1. 下载、安装并打开Minitool 分区向导^{(Minitool Partition Wizard)}后，找到EFI分区。

1. 右键单击^{(Right-click)}EFI分区^(EFI)并选择Explore。

现在您可以看到EFI分区中的所有内容。

如何在 Windows 10 中删除 EFI 分区？^{(How Can I Delete The EFI Partition In Windows 10?)}

你坚持这样做，不是吗？在尝试之前，请确保您有系统备份或有Windows 10 安装介质^{(Windows 10 installation media)}以在失败时进行恢复。这可能会出现严重错误。 

使用 DiskPart 删除 EFI 分区^{(Delete the EFI Partition Using DiskPart)}

DiskPart 是一个命令行实用程序^{(DiskPart is a command line utility)}，可以管理驱动器分区。您可以将其用于EFI分区。 

1. 以管理员^{(Administrator)}身份打开命令提示符^{(Command Prompt )}。 

1. 输入diskpart以启动该实用程序。

1. 使用list disk命令显示所有磁盘。找到具有EFI分区的那个。

1. 输入select disk #，其中 # 是磁盘编号。

1. 使用list partition命令显示分区。

1. 识别EFI分区。它将是Type: System。

1. 输入select partition #，其中 # 是分区的编号。

1. 输入命令delete partition override。

1. 准备好恢复或重新安装 Windows^{(reinstall Windows)}。可以手动重建EFI^(EFI)分区，但这是一个复杂的过程，可能无法正常工作。

使用 Minitool 删除 EFI 分区^{(Delete the EFI Partition Using Minitool)}

如果您无法使用DiskPart删除^(DiskPart)EFI分区，则很可能可以使用Minitool将其删除。

1. 打开Minitool并识别 EFI 分区。

1. 右键单击^{(Right-click)}分区并选择Delete。

1. Minitool将警告删除此分区可能会使Windows 10 无法启动^{(Windows 10 unbootable)}。如果必须，请选择Yes 。

1. 在Minitool的左下角，选择Apply。

1. Minitool将再次确认这是您想要做的。我们可以通过选择 No 退出，但选择Yes。

1. 进度窗口将短暂打开，如果您不确定，则不足以选择“取消”按钮。^(Cancel)

1. 它将报告它正在更新分区信息。

1. 最后，Minitool会告诉你EFI分区被删除了。选择确定^(OK)返回主窗口。

1. 您可以验证EFI分区是否已消失。100 MB 分区未分配^{(Unallocated )}且没有文件系统。 

如何恢复 EFI 分区？^{(How Do I Restore the EFI Partition?)}

你有遗憾，是吗？您可以从USB 拇指驱动器^{(USB thumb drive)}或DVD等安装媒体重新安装Windows。或者您可以使用命令提示符^{(Command Prompt)}手动重建EFI分区。这是一个超出本文范围的复杂过程，敬请期待有关在Windows 10中恢复^{(Windows 10)}EFI分区的文章。

What Is the EFI Partition in Windows 10 and Should You Delete It?

Have yoυ ever gone poking around in your cоmputer and found partitions or disk volumes you didn’t know existed? Or, have you noticed that a Windows installation makes two partitions; a large one and a smaller one? The small one is either 100 MB or 600 MB in size. What is that? Do you need it? Well, it’s the EFI partition, and the short answer is yes, you do need it.

What Is The EFI Partition in Windows 10?

We say Windows 10, but EFI partitions have been a part of previous versions of Windows and are also a part of other operating systems (OS), like Linux and macOS.

EFI stands for Extensible Firmware Interface. As the name reveals, EFI connects the OS to the firmware of the hardware components in a computer. Think of firmware as the brain in each piece of hardware. The extensible part of the name tells us that EFI can be changed for different situations.

Most Windows devices use a UEFI BIOS (Unified Extensible Firmware Interface Basic Input/Output System) these days. It’s easy to find the BIOS version for your computer. Only Windows devices using the UEFI BIOS will have the EFI partition. A non-UEFI BIOS Windows system includes the boot information in the primary partition.

When we start a computer, Windows doesn’t start right then. First, the BIOS is started. What is the BIOS? It’s a minimal OS that lives on a chip. It wakes up the hardware and firmware. Then the BIOS looks for the EFI partition to get instructions on starting and interacting with Windows. 

The EFI partition contains essential files and utilities, such as:

• Boot loaders: Starts the boot process, system utilities, device drivers and makes sure they work together.
• Device drivers: Tells Windows how to talk to the different hardware components.
• Data files: Holds information about the boot process and related logs.
• System utilities: Small programs that help in the starting and running of Windows.
• BitLocker data: If using BitLocker to encrypt a drive, the secret will be stored here, and it will interact with the TPM (trusted platform module) to encrypt and decrypt the drive. You may have heard that TPM 2.0 is required for Windows 11.

When the EFI partition is successfully found and the boot process works, Windows starts.

Should I Delete the EFI Partition?

If you see the EFI partition and think, “There’s an extra 100 MB my computer could be using. Let’s delete it.”, don’t do that. Windows does a good job of making it hard to delete the EFI partition. But you can do it.  Without the EFI, the BIOS will think Windows doesn’t exist, and the computer won’t properly start. Plus, does gaining an extra 100 MB of free drive space matter? Between cloud storage and inexpensive 1TB+ drives, we don’t need that 100 MB. Let it be.

Where Is the EFI Partition In Windows 10?

If you’re looking for the EFI partition in File Explorer, you probably won’t find it. The EFI partition is valuable, so it is hidden. But it’s not too hard to find.

Use Disk Management to Find the EFI Partition

Disk Management is a Windows utility for partitioning, resizing, renaming, and formatting disks.

1. Select the Start button and start typing disk. Select the option Create and format hard disk partitions.

1. When Disk Management opens, the EFI partition should be visible.

How Can I See What’s In The EFI Partition?

You could use the Command Prompt to view the contents of the EFI partition. It’s a bit complicated and not easy to navigate, though. If you’re really curious about what’s in the EFI partition, download Minitool Partition Wizard. It’s free.

1. Once you’ve downloaded, installed, and opened the Minitool Partition Wizard, find the EFI partition.

1. Right-click on the EFI partition and select Explore.

Now you can see everything that’s in the EFI partition.

How Can I Delete The EFI Partition In Windows 10?

You’re stuck on doing this, aren’t you? Before trying, make sure you have a system backup or have Windows 10 installation media to restore if it fails. This can go seriously wrong. 

Delete the EFI Partition Using DiskPart

DiskPart is a command line utility that can manage drive partitions. You can put it to work on the EFI partition. 

1. Open the Command Prompt as Administrator. 

1. Enter diskpart to start the utility.

1. Use the list disk command to show all the disks. Find the one that has the EFI partition.

1. Enter select disk #, where # is the disk number.

1. Show the partitions using the list partition command.

1. Identify the EFI partition. It will be Type: System.

1. Enter select partition #, where # is the partition’s number.

1. Enter the command delete partition override.

1. Get ready to restore or reinstall Windows. The EFI partition could be rebuilt manually, but it’s a complicated process and may not work.

Delete the EFI Partition Using Minitool

If you can’t delete the EFI partition using DiskPart, it’s likely it can be deleted using Minitool.

1. Open Minitool and identify the EFI partition.

1. Right-click on the partition and select Delete.

1. Minitool will warn that deleting this partition may make Windows 10 unbootable. Select Yes, if you must.

1. In the bottom-left corner of Minitool, select Apply.

1. Minitool will once again confirm this is what you want to do. We could back out by selecting No, but select Yes.

1. A progress window will briefly open, not long enough to select the Cancel button if you were unsure.

1. It will report that it’s updating partition information.

1. Finally, Minitool will tell you that the EFI partition is deleted. Select OK to return to the main window.

1. You can verify that the EFI partition is gone. The 100 MB partition is Unallocated and has no file system. 

How Do I Restore the EFI Partition?

You have regrets, do you? You could reinstall Windows from installation media like a USB thumb drive or DVD. Or you could manually rebuild the EFI partition using the Command Prompt. That’s a complicated process beyond the scope of this article, so stay tuned for an article about restoring the EFI partition in Windows 10.

Related posts

• 如何在Windows 10中删除Volume or Drive Partition

• 如何在Windows 10扩展System Drive Partition（C :)

• 6免费Disk Partition Software用于Windows 10

• 在 Windows 10 中检查磁盘是否使用 MBR 或 GPT 分区的 3 种方法

• 修复无法在 Windows 10 上创建新分区未分配空间

• Windows 10 Lock Screen Make Firefox display Media Controls Lock Screen

• 如何改变Hard Disk Cluster Size在Windows 10

• Event ID 158错误 - 同磁盘GUIDs assignment在Windows 10

• 如何在Windows 10中禁用或启用读者Mode在Chrome中

• 创建Keyboard Shortcut以在Windows 10中打开您最喜爱的Website

• Windows 10中Taskbar Context Menu中的Hide Toolbars option

• 解释Windows 10中的Modern Setup Host。它安全吗？

• 如何激活Windows 10 Enterprise Edition

• Emulate Mouse通过使用Windows 10使用Clickless Mouse来悬停Emulate Mouse

• 如何在Windows 10上使用PIP安装NumPy

• 如何禁用可移动存储类和Windows 10访问

• Windows 10上的Fix Fast Battery drain使用Hybrid图形

• 自由软件监控Windows 10中的System Performance & Resources

• Windows 10中的splwow64.exe进程是什么，我可以禁用吗？

• Best免费Molecular Modeling software的Windows 10