GUID代表GUID 分区表^{(GUID Partition Table)}，它是作为统一可扩展固件接口^{(Unified Extensible Firmware Interface)}( UEFI ) 的一部分引入的。相比之下，MBR代表Master Boot Record，它使用标准的BIOS 分区^{(BIOS partition)}表。使用GPT^(GPT)优于MBR有许多优点，例如您可以在每个磁盘上创建四个以上的分区，GPT可以支持大于 2 TB 的磁盘，而MBR不能。

MBR仅将引导扇区^{(boot sector)}存储在驱动器的开头。如果此部分发生任何事情，您将无法启动到Windows，除非您修复GPT在磁盘上的其他各个位置存储分区表^{(partition table)}备份的启动扇区^{(boot sector)}并加载紧急备份。^{(disk and emergency backup)}您可以继续使用您的系统而不会出现任何问题。

此外，由于分区表^{(partition table)}的复制和循环冗余校验^{(redundancy check)}( CRC ) 保护， GPT 磁盘^{(GPT disk)}提供了更高的可靠性。从MBR^(MBR)转换为GPT时您可能面临的唯一问题是磁盘不应包含任何分区或卷，这意味着不可能从MBR转换为GPT而不会丢失数据。幸运^{(Fortunately)}的是，一些 3rd方软件^{(party software)}可以帮助您将MBR 磁盘^{(MBR disk)}转换为GPT 磁盘，而不会在^{(GPT disk)}Windows 10中丢失数据。

如果您使用Windows 命令提示符或磁盘管理^{(Windows Command Prompt or Disk Management)}将MBR 磁盘^{(MBR Disk)}转换为GPT 磁盘^{(GPT Disk)}，则会丢失数据；因此，建议您在使用下面列出的任何一种方法之前，必须确保备份所有数据。无论如何^(Anyway)，不​​要浪费任何时间，让我们在下面列出的教程的帮助下，看看如何在Windows 10中将^{(Windows 10)}MBR转换为GPT 磁盘而不丢失数据。^{(GPT Disk Without Data Loss)}

^{(Convert MBR)}在Windows 10中将^{(Windows 10)}MBR 转换为GPT 磁盘而不会丢失数据^{(GPT Disk Without Data Loss)}

确保^(Make)创建一个还原点^{(restore point)} 以防万一^{(case something)}出现问题。

方法一：Diskpart中将MBR转为GPT磁盘【数据丢失】^{(Method 1: Convert MBR to GPT Disk in Diskpart [Data Loss])}

1.打开命令提示符^{(Command Prompt)}。用户可以通过搜索“cmd”然后按 Enter 来执行此步骤。

2. 键入Diskpart并按Enter打开Diskpart 实用程序^{(Diskpart utility)}。

3.现在一一键入以下命令^{(command one)}，并在每个命令后按Enter ：

list disk（记下要从MBR转换为GPT的磁盘的编号）
select disk #（将 # 替换为上面记下的编号）
clean（运行 clean 命令将删除磁盘上的所有分区或卷磁盘）
转换 gpt^{(convert gpt)}

4. “ convert gpt ”命令将主引导记录（MBR）^{(Master Boot Record (MBR))} 分区样式的空基本磁盘转换为^{(partition style)}GUID分区表（GPT）^{( GUID Partition Table (GPT))}分区样式的基本磁盘。

5.现在最好在未分配的GPT 磁盘上创建一个^{(GPT disk)}新的简单卷^{(New Simple Volume)}。

方法二：磁盘管理中将MBR转为GPT磁盘【数据丢失】^{(Method 2: Convert MBR to GPT Disk in Disk Management [Data Loss])}

1. 按 Windows 键 + R 然后键入diskmgmt.msc并按 Enter 打开磁盘管理。^{( Disk Management.)}

2. 在磁盘管理^{(Disk Management)}下，选择要转换的磁盘^(Disk)，然后确保右键单击其每个分区并选择删除分区或删除卷^{( Delete Partition or Delete Volume)}。执行此操作，直到所需磁盘上只剩下未分配的空间。^{(unallocated space)}

注意：^(Note:)如果磁盘不包含任何分区或卷，您将只能将MBR 磁盘转换为 GPT。^{(MBR disk)}

3.接下来，右键单击未分配的空间^{(right-click on the unallocated space)}并选择“转换为GPT磁盘^{(Convert to GPT Disk)}”选项。

4. 磁盘转换为GPT后，您可以创建一个新的简单卷^{(New Simple Volume)}。

方法 3：使用 MBR2GPT.EXE 将 MBR 转换为 GPT 磁盘 [不丢失数据]^{(Method 3: Convert MBR to GPT Disk Using MBR2GPT.EXE [Without Data Loss])}

注意：^(Note:) MBR2GPT.EXE 工具^{(MBR2GPT.EXE Tool)}仅适用于已安装 Creators 更新或拥有Windows 10 build 1703的Windows用户。^(Windows)

使用MBR2GPT.EXE 工具^{(MBR2GPT.EXE Tool)}的主要优点是它可以将MBR 磁盘^{(MBR Disk)}转换为GPT 磁盘^{(GPT Disk)}而不会丢失任何数据，并且该工具内置在Windows 10 版本 1703^{(version 1703)}中。唯一的问题是该工具被设计为在Windows 预安装环境^{(Windows Preinstallation Environment)}( Windows PE )命令提示符^{(command prompt)}下运行。它也可以使用/allowFullOS optionWindows 10操作系统运行，但不建议这样做。

磁盘先决条件^{(Disk Prerequisites)}

在对磁盘进行任何更改之前，MBR2GPT 会^(MBR2GPT)验证所选磁盘的布局和几何形状^{(layout and geometry)}，以确保：

磁盘当前正在使用 MBR
有足够的空间未被分区占用来存储主从 GPT：
16KB + 磁盘前面的 2 个扇区
16KB + 磁盘末尾的 1 个扇区
最多有 3 个主分区MBR 分区^{(MBR partition)}表其中一个
分区被设置为活动的并且是系统分区^{(system partition)}
磁盘没有任何扩展/逻辑分区系统分区^{(system partition)}上
的BCD 存储^{(BCD store)}包含指向OS 分区的默认^{(OS partition)}OS 条目^{(OS entry)}可以检索 卷ID^(IDs)对于分配了驱动器号的每个卷

磁盘上的所有分区都是Windows可识别的MBR类型，或者具有使用 /map命令行选项指定的映射^{(command-line option)}

如果这些检查中的任何一个失败，则转换将不会继续，并且将返回错误。

1. 按 Windows 键 + I 打开设置^(Settings)，然后单击更新和安全图标。^{(Update & Security icon.)}

2. 从左侧菜单中，选择恢复，^(Recovery,)然后单击高级启动^{(Advanced startup.)}下的“立即重新启动”。^{(Restart now)}

注意：^(Note:)如果您无法访问 Windows，请使用Windows 安装盘^{(Windows Installation Disk)}打开Advanced Startup。

3. 单击“立即重新启动”按钮后，Windows将重新启动并带您进入“高级启动”菜单。^{(Advanced Startup menu.)}

4. 从选项列表导航到：

Troubleshoot > Advanced options > Command Prompt

5.命令提示符^{(Command Prompt)}打开后，键入以下命令并回车：

mbr2gpt /validate

注意：^(Note:)这将使MBR2GPT验证所选磁盘的布局和几何形状^{(layout and geometry)}，如果发现任何错误，则不会进行转换。

6. 如果使用上述命令没有遇到任何错误，请键入以下内容并按 Enter:^{(t encounter)}

mbr2gpt /convert

注意：^(Note:)您还可以使用命令 mbr2gpt^{(command mbr2gpt)} /convert /disk:# 指定您想要的磁盘（将 # 替换为实际磁盘号^{(disk number)}，例如 mbr2gpt /convert /disk:1）。

7. 上述命令完成后，您的磁盘将从 MBR 转换为 GPT^{(your disk will be converted from MBR to GPT)}。但是在新系统可以正常启动之前，您需要将固件切换到^{(switch the firmware to boot to)}UEFI 模式启动。^{( UEFI mode.)}

8. 为此，您需要进入 BIOS 设置，然后将引导更改为 UEFI 模式。^{( enter BIOS setup then change the boot to UEFI mode.)}

这就是 在没有任何第三方工具帮助的情况下在 Windows 10 中将 MBR 转换为 GPT 磁盘而不丢失数据的方法。^{(Convert MBR to GPT Disk Without Data Loss in Windows 10 without the help of any third-party tools.)}

方法四：使用迷你工具分区向导将MBR转为GPT磁盘【不丢失数据】^{(Method 4: Convert MBR to GPT Disk Using MiniTool Partition Wizard [Without Data Loss])}

MiniTool Partition Wizard是一款付费工具，但您可以使用MiniTool Partition Wizard 免费版^{(MiniTool Partition Wizard Free Edition)}将您的磁盘从MBR转换为GPT。

1.从此链接^{(MiniTool Partition Wizard Free Edition from this link)}下载并安装MiniTool分区向导免费版。

2. 接下来，双击MiniTool 分区向导^{(MiniTool Partition Wizard)}应用程序以启动它，然后单击启动应用程序。^{(Launch Application.)}

3. 现在从左侧单击^{(side click)}转换磁盘下的“将 MBR 磁盘转换为 GPT 磁盘^{(Convert MBR Disk to GPT Disk)}”。

4. 在右侧窗口中，select the disk #（# 是磁盘编号^{(disk number)}），然后单击菜单中的应用^(Apply)按钮。

5. 单击是确认，^{(Yes to confirm,)} MiniTool分区向导^{(MiniTool Partition Wizard)}将开始将您的MBR 磁盘转换为 GPT 磁盘。^{( MBR Disk to GPT Disk.)}

6. 完成后会显示成功信息，点击确定关闭。

7. 您现在可以关闭MiniTool 分区向导^{(MiniTool Partition Wizard)}并重新启动您的 PC。

这就是 在 Windows 10 中将 MBR 转换为 GPT 磁盘而不丢失数据的^{(Convert MBR to GPT Disk Without Data Loss in Windows 10)}方法，但是您可以使用另一种方法。

方法 5：使用 EaseUS Partition Master 将 MBR 转换为 GPT 磁盘 [不丢失数据]^{(Method 5: Convert MBR to GPT Disk Using EaseUS Partition Master [Without Data Loss])}

1.从此链接^{(EaseUS Partition Master Free Trial from this link.)}下载并安装EaseUS Partition Master 免费试用版。

2. 双击EaseUS Partition Master 应用程序^{(EaseUS Partition Master application)}启动它，然后从左侧菜单中单击^{(side menu click)}操作下的“将 MBR 转换为 GPT^{(Convert MBR to GPT)} ”。

3. 选择要转换的 disk #（# 是磁盘号^{(disk number)}）然后单击菜单中的应用按钮^{(Apply button)}。

4. 单击是^(Yes)确认，EaseUS Partition Master将开始将您的MBR 磁盘转换为 GPT 磁盘。^{(MBR Disk to GPT Disk.)}

5. 完成后会显示成功信息，点击确定关闭。

推荐的：^{(Recommended:)}

• 在Windows 10中检查磁盘^(Disk)是否使用MBR 或 GPT 分区^{(MBR or GPT Partition)}的3种方法^(Ways)
• 在Windows 10中启用或禁用强制磁盘配额限制^{(Enforce Disk Quota Limits)}
• 如何在Windows 10中使用^{(Windows 10)}磁盘清理^{(Disk Cleanup)}
• 在Windows 10中启用或禁用磁盘配额^{(Disk Quotas)}

就是这样，您已经成功学习了如何在 Windows 10 中将 MBR 转换为 GPT 磁盘而不会丢失数据，^{(How to Convert MBR to GPT Disk Without Data Loss in Windows 10)}但是如果您对本教程仍有任何疑问，请随时在评论部分提出。

Convert MBR to GPT Disk Without Data Loss in Windows 10

GUІD stands for GUID Partition Table which was introduсed as a рart of the Unified Extensible Firmware Interface (UEFI). In contrast, MBR stands for Master Βoot Record, which uses the standard BIOS partition table. There аre many advantages оf using GPT over MBR such as you can create more than four partitions on each disk, GPT can support disk larger than 2 TB whеre MBR can’t.

MBR only stores the boot sector at the beginning of the drive. If anything happens to this section, you won’t be able to boot to Windows unless you repair the boot sector where GPT stores the backup of the partition table at the various other places on disk and emergency backup is loaded. You can continue using your system without any issues.

Furthermore, GPT disk provides greater reliability due to replication and cyclical redundancy check (CRC) protection of the partition table. The only problem which you can face while converting from MBR to GPT is that the disk should not contain any partitions or volumes which means it would be impossible to convert from MBR to GPT without data loss. Fortunately, some 3rd party software can help you convert your MBR disk into GPT disk without data loss in Windows 10.

If you’re using Windows Command Prompt or Disk Management to convert MBR Disk to GPT Disk then there would be data loss; therefore it is advised that you must make sure to backup all of your data before using any one of the below-listed methods. Anyway, without wasting any time, let’s see How to Convert MBR to GPT Disk Without Data Loss in Windows 10 with the help of the below-listed tutorial.

Convert MBR to GPT Disk Without Data Loss in Windows 10

Make sure to create a restore point just in case something goes wrong.

Method 1: Convert MBR to GPT Disk in Diskpart [Data Loss]

1. Open Command Prompt. The user can perform this step by searching for ‘cmd’ and then press Enter.

2. Type Diskpart and hit Enter to open Diskpart utility.

3. Now type the following command one by one and hit Enter after each one:

list disk (Note down the number of the disk which you want to convert from MBR to GPT)
select disk # (Replace the # with the number which you noted down above)
clean (Running the clean command will delete all partitions or volumes on the disk)
convert gpt

4. The “convert gpt” command will convert an empty basic disk with the Master Boot Record (MBR) partition style into a basic disk with the GUID Partition Table (GPT) partition style.

5.Now it would be best if you created a New Simple Volume on the unallocated GPT disk.

Method 2: Convert MBR to GPT Disk in Disk Management [Data Loss]

1. Press Windows Key + R then type diskmgmt.msc and hit Enter to open Disk Management.

2. Under Disk Management, select the Disk you want to convert then make sure right-click on each of its partitions and select Delete Partition or Delete Volume. Do this until only unallocated space is left on the desired disk.

Note: You will be only able to convert an MBR disk to GPT if the disk does not contain any partitions or volumes.

3. Next, right-click on the unallocated space and select “Convert to GPT Disk” option.

4. Once the disk is converted to GPT, and you can create a New Simple Volume.

Method 3: Convert MBR to GPT Disk Using MBR2GPT.EXE [Without Data Loss]

Note: MBR2GPT.EXE Tool is only available to Windows users who have installed Creators update or have Windows 10 build 1703.

The main advantage of using MBR2GPT.EXE Tool is that it can convert an MBR Disk to GPT Disk without any data loss and this tool is inbuilt in Windows 10 version 1703. The only problem is that this tool is designed to run from a Windows Preinstallation Environment (Windows PE) command prompt. It can also be run from Windows 10 OS by using the /allowFullOS option, but it’s not recommended.

Disk Prerequisites

Before any change to the disk is made, MBR2GPT validates the layout and geometry of the selected disk to ensure that:

The disk is currently using MBR
There is enough space not occupied by partitions to store the primary and secondary GPTs:
16KB + 2 sectors at the front of the disk
16KB + 1 sector at the end of the disk
There are at most 3 primary partitions in the MBR partition table
One of the partitions is set as active and is the system partition
The disk does not have any extended/logical partition
The BCD store on the system partition contains a default OS entry pointing to an OS partition
The volume IDs can be retrieved for each volume which has a drive letter assigned
All partitions on the disk are of MBR types recognized by Windows or have a mapping specified using the /map command-line option

If any of these checks fails, the conversion will not proceed, and an error will be returned.

1. Press Windows Key + I to open Settings then click on Update & Security icon.

2. From the left-hand menu, select Recovery, then click on “Restart now” under Advanced startup.

Note: If you can’t access your Windows, use the Windows Installation Disk to open an Advanced Startup.

3. As soon as you click on “Restart now” button, Windows will restart and take you to the Advanced Startup menu.

4. From the list of options navigate to:

Troubleshoot > Advanced options > Command Prompt

5. Once the Command Prompt opens, type the following command and hit enter:

mbr2gpt /validate

Note: This will let MBR2GPT validates the layout and geometry of the selected disk if any errors are found then conversion would not take place.

6. If you don’t encounter any errors using the above command, then type the following and hit Enter:

mbr2gpt /convert

Note: You can also specify which disk you want by using the command mbr2gpt /convert /disk:# (replace # with the actual disk number, e.g. mbr2gpt /convert /disk:1).

7. Once the above command completes your disk will be converted from MBR to GPT. But before the new system can boot properly, you need to switch the firmware to boot to UEFI mode.

8. To do that you need to enter BIOS setup then change the boot to UEFI mode.

This is how you Convert MBR to GPT Disk Without Data Loss in Windows 10 without the help of any third-party tools.

Method 4: Convert MBR to GPT Disk Using MiniTool Partition Wizard [Without Data Loss]

MiniTool Partition Wizard is a paid tool, but you can use the MiniTool Partition Wizard Free Edition to convert your disk from MBR to GPT.

1. Download and install MiniTool Partition Wizard Free Edition from this link.

2. Next, double-click on the MiniTool Partition Wizard application to launch it then click on Launch Application.

3. Now from the left-hand side click on “Convert MBR Disk to GPT Disk” under Convert Disk.

4. In the right window, select the disk # (# being the disk number) which you want to convert then click on the Apply button from the menu.

5. Click Yes to confirm, and the MiniTool Partition Wizard will start converting your MBR Disk to GPT Disk.

6. Once finished, it will show the successful message, click Ok to close it.

7. You can now close MiniTool Partition Wizard and restart your PC.

This is how you Convert MBR to GPT Disk Without Data Loss in Windows 10, but there is another method you can use.

Method 5: Convert MBR to GPT Disk Using EaseUS Partition Master [Without Data Loss]

1. Download and Install EaseUS Partition Master Free Trial from this link.

2. Double-click on EaseUS Partition Master application to launch it and then from the left-hand side menu click on “Convert MBR to GPT” under Operations.

3. Select the disk # (# being the disk number) to convert then click on Apply button from the menu.

4. Click Yes to confirm, and the EaseUS Partition Master will start converting your MBR Disk to GPT Disk.

5. Once finished, it will show the successful message, click Ok to close it.

Recommended:

• 3 Ways to Check if a Disk Uses MBR or GPT Partition in Windows 10
• Enable or Disable Enforce Disk Quota Limits in Windows 10
• How to Use Disk Cleanup in Windows 10
• Enable or Disable Disk Quotas in Windows 10

That’s it you have successfully learned How to Convert MBR to GPT Disk Without Data Loss in Windows 10 but if you still have any questions regarding this tutorial then feel free to ask them in the comment’s section.

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