无数据丢失,在Windows上将MBR转换为GPT磁盘的方法

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无数据丢失,在Windows上将MBR转换为GPT磁盘的方法

Table of Contents:

  1. Introduction
  2. Understanding the MBR and GPT Partition Styles 2.1 What is MBR? 2.2 What is GPT?
  3. Why Convert MBR to GPT Disk? 3.1 Windows 11 Compatibility 3.2 Advantages of GPT
  4. Checking Disk Partition Style 4.1 Using Disk Management 4.2 Determining the Partition Style
  5. Requirements for Converting MBR to GPT 5.1 UEFI Support 5.2 Suspension of BitLocker Encrypted Volumes 5.3 Number of Partitions
  6. Using the MBR2GPT Tool 6.1 Checking Windows Version 6.2 Upgrading Windows 10 6.3 Converting MBR to GPT
  7. Changing Boot Mode from Legacy to UEFI
  8. Verifying the Partition Style and Boot Mode
  9. Troubleshooting and FAQ 9.1 Troubleshooting the Conversion Process 9.2 Frequently Asked Questions

Introduction

When installing a new version of Windows or transitioning from an older computer to a newer one, You may encounter an error stating that Windows cannot be installed on the selected disk because it has an MBR partition table. This issue arises because newer versions of Windows, like Windows 11, only support the GPT partition style. To overcome this problem, you need to convert your MBR disk to GPT without losing any data. In this guide, I will explain how to perform this conversion using Microsoft's official tool called MBR2GPT.

Understanding the MBR and GPT Partition Styles

MBR (Master Boot Record) and GPT (GUID Partition Table) are two different partition styles used on hard disks to manage the partitioning and booting process.

What is MBR? MBR is an older partition style used by computers for many years. It stores partition information and boot instructions in the first sector of the disk called the Master Boot Record.

What is GPT? GPT is the newer partition style introduced with the UEFI (Unified Extensible Firmware Interface) specification. It offers several advantages over MBR, such as support for larger disk sizes, unlimited partitions, and improved data integrity.

Why Convert MBR to GPT Disk?

There are several reasons to convert your MBR disk to GPT, including:

Windows 11 Compatibility Windows 11, the latest version of the operating system, only supports the GPT partition style. Therefore, if you plan to upgrade to Windows 11, you must convert your MBR disk to GPT.

Advantages of GPT GPT offers various advantages over MBR, such as:

  1. Larger Disk Support: GPT supports disk sizes larger than 2TB, whereas MBR has a limitation of 2TB.
  2. Unlimited Partitions: GPT allows you to Create an unlimited number of partitions, while MBR is limited to four primary partitions or three primary partitions and one extended partition.
  3. Data Integrity: GPT uses a backup partition table to protect against data corruption caused by disk errors.

Checking Disk Partition Style

Before converting your disk from MBR to GPT, you need to determine the Current partition style.

Using Disk Management To check the partition style using Disk Management:

  1. Open the Start menu and search for "Disk Management."
  2. Open the Disk Management tool from the search results.
  3. Right-click on the first disk (usually Disk 0) and select "Properties."
  4. In the Properties window, switch to the "Volumes" tab.
  5. Look at the "Partition style" field. If it reads "GUID Partition Table (GPT)," there is no need for conversion. If it displays "Master Boot Record (MBR)," you need to proceed with the conversion.

Determining the Partition Style To validate the partition style through the command prompt:

  1. Press the Start menu key, Type "cmd," and right-click on "Command Prompt" from the search results.
  2. Select "Run as administrator."
  3. Click "Yes" on the User Account Control (UAC) prompt.
  4. Type the validation command "mbr2gpt /validate /disk:0" and press Enter.
  5. Replace "0" in "/disk:0" with the appropriate disk number if needed.
  6. If the validation is successful, proceed to the next step.

Requirements for Converting MBR to GPT

Before converting MBR to GPT, ensure that the following requirements are met:

UEFI Support Your computer must support UEFI mode. If your BIOS only supports legacy mode, you cannot utilize this conversion method.

Suspension of BitLocker Encrypted Volumes If you have any BitLocker encrypted volumes on the disk, they must be suspended or decrypted before the conversion process.

Number of Partitions The MBR partition table can have at most three primary partitions. If you have more than three partitions, you must merge them except for the first and second partitions.

Using the MBR2GPT Tool

Microsoft provides an official tool called MBR2GPT, which allows you to convert a disk from MBR to GPT without modifying or deleting the data.

Checking Windows Version Before using the MBR2GPT tool, ensure that you have the correct Windows version:

  1. Press the Windows key + R to open the Run dialog.
  2. Type "winver" and press Enter.
  3. Check the Windows version displayed in the About Windows window.
  4. If your computer is running Windows 10 version 1707 (Creator Update) or later, the MBR2GPT tool is already available.

Upgrading Windows 10 If your computer is running Windows 10 version 1607 (Anniversary Update) or earlier, you need to upgrade to the latest version of Windows 10 before using the MBR2GPT tool. Follow the instructions in the video description for upgrading your Windows version.

Converting MBR to GPT To convert MBR to GPT using the MBR2GPT tool:

  1. Press the Start menu key and type "cmd."
  2. Right-click on "Command Prompt" from the results and select "Run as administrator."
  3. Click "Yes" on the UAC prompt.
  4. Type the conversion command "mbr2gpt /convert /disk:0" and press Enter.
  5. Replace "0" in "/disk:0" with the correct disk number if needed.
  6. If you receive a success message, congratulations! The conversion is complete without any data loss.

Changing Boot Mode from Legacy to UEFI

Once you have converted the disk to GPT, you need to change the boot mode from legacy to UEFI to ensure correct booting of the device.

The method for changing boot mode may vary depending on your computer's brand. In general, you can follow these steps:

  1. Turn off the computer.
  2. Press the power button and immediately press the F10 key repeatedly until the BIOS setup opens.
  3. Use the right arrow key to navigate to the "System Configuration" menu.
  4. Use the down arrow key to select "Boot Options" and press Enter.
  5. Select "Legacy Support" and press Enter.
  6. Select "Disabled" and press Enter.
  7. Press the F10 key and select "OK" to save and exit the BIOS setup.
  8. The computer will restart, and it should start correctly.

Verifying the Partition Style and Boot Mode

After the conversion and boot mode change, verify that your computer is using the GPT partition style and UEFI boot mode.

  1. Open the Disk Management tool.
  2. Right-click on the first disk and select "Properties."
  3. Switch to the "Volumes" tab and look for the "Partition style" field. It should display "GUID Partition Table (GPT)."

To check the boot mode:

  1. Press the Start menu key and search for "System Information."
  2. Open the System Information tool from the search results.
  3. Under System Summary, look for the "BIOS Mode" field. If it shows "UEFI," your boot mode is successfully changed.

Troubleshooting and FAQ

Troubleshooting the Conversion Process If you encounter any issues during the conversion process, refer to the troubleshooting section in the video or consult the community group for assistance.

Frequently Asked Questions Q: Can I convert a disk with data on it from MBR to GPT without data loss? A: Yes, the MBR2GPT tool allows you to convert the disk without losing any data.

Q: How do I know if my computer supports UEFI mode? A: Check your computer's BIOS settings or consult the manufacturer's documentation to determine if UEFI mode is supported.

Q: What if I have more than three partitions on my MBR disk? A: Merge all the partitions except the first and second partitions before performing the conversion.

Q: What happens if the validation fails during the conversion process? A: If any of the checks fail, the conversion will not proceed, and an error message will be displayed. Consult the troubleshooting section or seek assistance for further guidance.

Q: I have an encrypted volume using BitLocker. Can I still convert the disk? A: Before starting the conversion, you need to suspend or decrypt any BitLocker encrypted volumes on the disk.

Conclusion

Converting an MBR disk to GPT without data loss is necessary when upgrading to Windows 11 or taking AdVantage of the benefits offered by GPT. With the MBR2GPT tool and proper configuration, you can seamlessly convert your disk and change the boot mode, ensuring a smooth transition to the new partition style. Remember to verify the partition style and boot mode after the conversion process is complete.""" Highlights:

  • Learn how to convert MBR to GPT disk without data loss on Windows.
  • Understand the differences between MBR and GPT partition styles.
  • Determine the current partition style using Disk Management.
  • Meet the requirements for converting MBR to GPT.
  • Use the MBR2GPT tool provided by Microsoft for the conversion.
  • Change boot mode from legacy to UEFI after converting.
  • Verify the partition style and boot mode to ensure successful conversion.
  • Troubleshoot common issues during the conversion process.
  • Get answers to frequently asked questions about converting MBR to GPT.
  • Seamlessly upgrade to Windows 11 or take advantage of GPT benefits.

FAQ:

Q: Can I convert an MBR disk to GPT without losing data? A: Yes, with the MBR2GPT tool, you can convert an MBR disk to GPT without any data loss.

Q: Why should I convert MBR to GPT? A: Converting to GPT is necessary for compatibility with Windows 11, and it offers advantages like larger disk support and improved data integrity.

Q: How can I check the current partition style? A: Use the Disk Management tool or the command prompt to check the partition style of your disk.

Q: What are the requirements for converting MBR to GPT? A: Your PC must support UEFI, encrypted volumes must be suspended, and there should be at most three primary partitions.

Q: How do I change the boot mode from legacy to UEFI? A: The process may vary, but generally, you need to access the BIOS settings, disable legacy support, and enable UEFI boot mode.

Q: What should I do if the conversion process fails? A: Refer to the troubleshooting section or seek assistance from the community group for further guidance.

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