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This page includes two direct solutions on how to convert GPT to MBR without Windows OS. If you are installing Windows system like Windows 10/8/7 but received the error message 'The selected disk is of GPT partition style...', stay calm and follow up either method here to get rid of on your own:

To convert GPT disk with OS installed to MBR for better compatibility, most users might want to finish the conversion without losing data. Then AOMEI Partition Assistant Professional is a great tool, which can convert GPT to MBR (or MBR to GPT) without damaging inside data including the operating system. This guide will help you convert from MBR to GPT. Change MBR to GPT without Data Loss using MBR2GPT (No Data Loss) MBR2GPT is another command-line utility tool that is available in Windows 10 version 1703 or later. It is able to be simply run from Advanced Recovery Command Prompt via Windows Preinstallation Environment (WinPE). MiniTool Partition Wizard Home Edition is a really useful, powerful and easy to use disk management app. The MiniTool Partition Wizard Home Edition app provides powerful functions on disk partition management to help you optimize your disk usage and protect your data. This video will show you how to convert GPT disk to MBR with MiniTool Partition Wizard. Article Resource: http://www.partitionwizard.com/help/Convert-GPT-dis.

Support CPU without SSE2. Bug fix for MiniTool Partition Wizard maximizes itself when it is moved to the left edge and upper edge of computer monitor. Bug fix for MiniTool Partition Wizard is not showing Menu in some operating systems. Enhance the ability of catching crash. Bug fix for MiniTool Partition Wizard crashes at loading volumes.

# 1. Convert GPT to MBR without Operating System via Bootable USB Drive

# 2. Convert GPT to MBR without Operating System using CMD

How Can I Convert GPT to MBR without Operating System

'I wiped my Windows 7 and thought I could operate with Windows 10. But when I am trying to install Windows 10, it says, 'The Selected Disk is of the GPT Partition Style' and refuses to format the partition.

How do I convert GPT to MBR without operating system and data loss?'

The reason why some users are not allowed to install Windows on GPT is that your computer doesn't support UEFI boot.

For example, the Windows 32 bit operating system can only boot from an MBR disk, so you need to convert GPT to MBR before installing the system. If your disk is in GPT, but the computer doesn't support booting in UEFI/EFI mode, you also need to convert from GPT to MBR.

Usually, you can use the built-in Disk Management and command line to convert GPT disk to MBR. However, if you don't have a Windows system installed on your computer, switching partition style from GPT to MBRon a disk is no longer a simple task.

Don't worry. In the following, we will show you two ways to convert GPT to MBR without an operating system. You can do it with a partition manager or using the Diskpart command.

Convert GPT to MBR Without Operating System via Bootable USB

Professional partition manager software - EaseUS Partition Master enables you to convert GPT to MBR without Windows OS on your computer in two steps.

First, create a bootable disk (via USB disk or CD) on another healthy computer, then connect the bootable USB drive to the target PC and boot computer from the USB bootable disk.

Second, run the EaseUS partition manager to convert GPT to MBR without access to the operating system. No data loss will happen during the process!

Check the detailed steps:

Step 1. Prepare a disc or drive.To create a bootable disk of EaseUS Partition Master, you should prepare a storage media, like a USB drive, flash drive, or a CD/DVD disc. Correctly connect the drive to your computer. Then, launch EaseUS Partition Master, go to the 'WinPE Creator' feature on the top. Click on it.

Step 2. Create EaseUS Partition Master bootable drive.You can choose the USB or CD/DVD when the drive is available. However, if you do not have a storage device at hand, you can also save the ISO file to a local drive, and later burn it to a storage media. Once made the option, click 'Proceed'.

You have created an EaseUS Partition Master WinPE bootable disk now. You can manage your hard disks and partitions through the bootable drive when the computer does not start properly, or the system is not installed.

If you have RAID drives, load the RAID driver first by clicking 'Add Driver' from the menu bar, which can help you add the driver of your device under WinPE environment, as some specific device cannot be recognized under WinPE environment without drivers installed, such as RAID or some specific hard disk.

Step 3. Connect the WinPE bootable disk to the computer. Restart your computer and press F2/Del at the same time to enter BIOS. Set to boot the PC from 'Removable Devices' (bootable USB disk) or 'CD-ROM Drive' (bootable CD/DVD) beyond Hard Drive. Press 'F10' to save and exit.

Step 4. Launch EaseUS Partition Master. Right-click the GPT disk that you want to convert and select 'Convert to MBR'. Then, you will add a pending operation.

Step 5. Click the 'Execute Operation' button at the top-left corner. Next, click 'Apply' and begin to convert GPT disk to MBR. All data is safe with EaseUS partition manager software.

Apart from the disk conversion, EaseUS Partition Master also supports converting FAT to NTFS and converting a logical partition to primary or primary partition to logical.

Convert GPT to MBR Without Operating System Using CMD

As for skilled computer users who don't want to use a third-party partition manager software, you can convert GPT to MBR during Windows installation using CMD command.

If you are reinstalling or fresh-installing Windows and need to convert GPT to MBR, follow the next steps to complete the task:

Step 1. Plugin the Windows installation CD/DVD, and start to install Windows. Meanwhile, press Shift + F10 to open the Command Prompt window.

Step 2. Type diskpart in the cmd and hit Enter. Click 'Yes' to open Diskpart.

Step 3. Type list disk and press 'Enter'. Note the disk number that you want to convert to MBR.

Step 4. Type select disk 1 (Replace 1 with the disk number of the disk you need to convert).

Step 5. Type clean and press 'Enter'. It will delete all partitions and data on the disk. Make sure you have made a backup.

Step 6. Type convert mbr press 'Enter'. It will convert the empty GPT partition style to MBR.

After this, you may continue installing Windows on your converted MBR disk by following the on-screen instructions on your computer.

Bonus Tip: Convert MBR to GPT Without Operating System

This tutorial shows how to convert GPT to MBR without Windows OS by using EaseUS WinPE bootable disk and the built-in Diskpart command. Another big request in disk converting, on the contrary, is how to convert MBR to GPT without operating system.

When attempting to create more than four primary partitions on your disk, making full use of a disk with more than 2TB of space, or installing Windows on an EFI system, all this requires you to make your target disk is of MBR style. To do so, you may use the same approaches in this article for help.

Again, converting with Diskpart will remove partitions and data on your disk. To avoid data loss, you may either back up data ahead of time or use EaseUS Partition Master for help.

• If you decide to let EaseUS partition manager software help, here are the detailed steps to convert MBR to GPT without operating system:

Also remember that when you cannot boot up the OS, the creating bootable USB procedure should be done on another healthy computer.

Step 1. Prepare a disc or drive.To create a bootable disk of EaseUS Partition Master, you should prepare a storage media, like a USB drive, flash drive, or a CD/DVD disc. Correctly connect the drive to another bootable computer. Then, launch EaseUS Partition Master, go to the 'WinPE Creator' feature on the top. Click on it.

Step 2. Choose USB or CD/DVD according to the device you connect to the computer.

Step 3. Connect the WinPE bootable disk to the computer. Restart your computer and press F2/Del at the same time to enter BIOS. Set to boot the PC from 'Removable Devices' (bootable USB disk) or 'CD-ROM Drive' (bootable CD/DVD) beyond Hard Drive. Press 'F10' to save and exit.

Step 4. Launch EaseUS Partition Master. Right-click the GPT disk that you want to convert and select 'Convert to GPT'. Then, you will add a pending operation.

Step 5. Click the 'Execute Operation' button at the top-left corner. Next, click 'Apply' and begin to convert the MBR disk to GPT.

• If you choose to use Diskpart CMD command during the Windows OS installation, remember to change the command from convert mbr to convert gpt after selecting the target disk.

FAQS of GPT to MBR or MBR to GPT Disk Conversion

As for inexperienced users, you may still have some doubts about the disk conversion between GPT and MBR. We collected 5 questions that are also asked by other people on Google Chrome and we list a brief answer below each question. We Hope these answers may also help you out.

1. Can GPT be converted to MBR?

Yes. Basically, the partition style of a hard drive can be changed from GPT to MBR or vice versa. It means that you may convert your disk to the desired partition style - GPT/MBR on your computer.

2. How do I change from MBR to GPT in Windows 10?

There are three ways that can help you change hard drive partition style from MBR to GPT in Windows 10.

If it's a data disk, you can directly use EaseUS Partition Master to convert the disk from MBR to GPT without deleting any partition and data.

Disk Management or CMD command as shown on this page can also convert your disk to GPT. Yes, the latter two ways will delete all partitions, remove all your personal data. Therefore, you should better back up data in advance. If you deleted a partition without backup, don't worry. You can perform lost partition recovery with the help of EaseUS Partition Master.

If it's a system disk, you need to check whether your computer supports UEFI boot in BIOS at first. Next, apply EaseUS Partition Master with a bootable USB to convert MBR to GPT as the way shown on this page.

3. Will I lose data while converting disk from GPT to MBR or MBR to GPT?

If you use Disk Management or Diskpart CMD command to convert disk, the answer will be yes. It will delete all partitions and data on your disk before changing the disk partition style.

If you apply a third-party partition manager software like EaseUS Partition Master for help, it will be no. No data will lose while converting disk between MBR and GPT.

4. How can I migrate OS from MBR disk to GPT SSD disk?

Basically, migrating OS from MBR disk to GPT disk is impossible in a manual way. Fortunately, EaseUS Partition Master with its migrate OS to SSD/HDD feature can

5. How can I partition my hard drive without an operating system?

Usually, a manual partition hard drive method can not work if the operating system doesn't boot up. Good news! EaseUS Partition Master with a bootable USB drive is capable of helping you out. With it, you can partition a hard drive without OS, format hard drive without OS, and even wipe a hard drive without OS.

Summary :

Are you still troubled by the issue 'hard drive not showing up'? This article will show you how to slove the probelm 'hard drive not showing up'. In addition, the issue 'hard drive not showing up' may lead to data loss. But, don't worry! MiniTool Power Data Recover, a piece of profesional data recovery software, can help you to get the lost data back.

Hard Drive Not Showing up

Hard drive containing massive important data is not showing up in My Computer or Windows Explorer? Have you ever encountered this problem?

It is believed that many users have encountered the situation mentioned above. Let's see a true example from answers.microsoft.com:

My 2nd hard drive isn't showing up in my computer. The hard drive was a slave I took out of my old XP machine after it crashed. I had installed it into my new vista machine before and it was working, but then I had to reinstall the OS and ever since then it has not shown up. I have double checked to make sure it was set as a slave drive and it is. It shows up in the Bios, the device manager, and in Disk Management, just not in my computer. Nothing is showing up as unallocated in disk management and the drive says it's healthy. In the device manager it says the device is working properly. I've tried to just give it a drive letter in disk management, but when I right click on it the only option I have is help. I've also tried to update the drivers, and it says they are up to date. I've tried disabling and enabling the hard drive. I've even tried uninstalling it. When I restarted it did detect it and reinstalled the drivers, but I still can't get it to show up in my computer. answers.microsoft.com

Why does hard drive (including external hard drive or, USB hard drive) not show up in My Computer or Windows Explorer? Do you know how to deal with this issue? Besides, can we recover data from hard drive when it is not showing up?

Want to know answers of these questions? Here we are!

Why Hard Drive Isn't Showing up and How to Fix

According to the questionnaire survey and the result of experiment, we find there are many factors that can cause the 'hard drive not showing up' issue, including mistaken operation, computer virus invasion, and hard drive letter missing, and so on.

Let's discuss the details.

Case 1- Hard Drive Is Not Initialized

As we know, once hard drive shows as uninitialized, we are unable to see it in Windows Explorer, and cannot access its files. And many reasons (such as virus invasion, master boot record corruption, bad sectors, and so on) can lead to disk not initialized issue.

Solution

To solve this issue, you can right-click the uninitialized disk, and then choose Initialize Disk to initialize it to use it again.

If your disk is not initialized anymore due to sudden change, we don’t suggest you to initialize the disk immediately. Conversely, you had better recover all your missing data from it, and then initialize it to make it usable again. Otherwise, the original data will be lost forever. Here, if you don't know how to perfectly recover lost data, you can try using MiniTool Power Data Recovery because of its excellent performance, simple operation and high security.

Related: Solved-Disk Unknown Not Initialized Issue on External Hard Drive

Case 2 – Hard Drive Letter Is Missing

A drive letter is a single alphabetic character A through Z that has been assigned to a physical drive or drive partition in the computer. And if you want to see your hard drive in My Computer or Windows Explorer, you should assign it with a drive letter. Once the drive letter is missing, you will encounter the 'hard drive not showing up' issue.

Solution

To solve this problem, you can assign a drive letter for it. Windows built –in disk management as well as partitioning software like MiniTool Partition Wizard can help to add a new drive letter on it.
Click here to learn several ways to get missing drive letters back in Windows.

Case 3 – Hard Drive Is Hidden

Now, some users want to turn to third-party software like MiniTool Partition Wizard to hide their hard drive to protect data. However, once accidentally hide a drive containing massive important data, what should we do since this drive isn't showing up in Windows Explorer?

Solution

If drive is hidden by mistake, what should we do since Disk Management only offers Delete Volume feature as well as Help feature, as shown above? Can we delete the hidden volume, and create a new one? Of course, we can! But, this method will cause data loss.

Case 4 – Hard Drive Becomes Unallocated

Let's start with a true example:

My external USB 3.0 HD was working perfectly well yesterday. However, today suddenly became an 'unallocated' drive without even a drive name. I'm able to detect the drive but I have no way of accessing it.

The only solution that I've tried so far is to access the HD with another computer. But, the results are the same with those computers. I haven't done anything else...

Here's a screenshot of the problem:

In this case, what should we do? Can we effectively solve this problem without losing original data?

Solution

If your hard disk space turns into unallocated, you are allowed to create new volume on this disk and make it appear in Windows Explorer. However, this solution will cause data loss forever.

In addition, you are highly recommended to recover data from unallocated drive ahead of doing anything else. MiniTool Power Data Recovery is recommended here since this all-in-one tool has been awarded as the top 10 data recovery software on TOPTENREVIEWS.

Case 5 - External hard Drive Is Not Recognized

There's also another situation where the hard drive (especially external hard drive like USB hard drive) is not showing up in My Computer or Windows Explorer. And, you will receive a warning that saying device not recognized.

As a matter of fact, this issue can be caused by various reasons, including the currently loaded USB driver has become unstable or corrupt. For more information about the device not recognized error, please see Error: 'USB Device not recognized' when you try to access a USB external hard drive.

Solution

Here, to fix the 'external hard drive not recognized' error, you can try the below methods.

Method 1: Restart computer

Unplug your USB, restart your computer and plug in and see if it works now.

Method 2: Update device driver

Open Control Panel > Printers and devices. Check if you can see any entry for Unidentified USB device or Unknown Device. Open its Properties and update its driver, if an update is found to be available.

......

Case 6 – Hard Drive Has Wrong File System

Last but not least, if your hard drive is partitioned with the wrong file system, you cannot see it in My Computer or Windows Explorer. For example, you may have formatted the drive with the ext4 file system from Linux or the HFS Plus file system from a Mac. Windows can't read these file systems. But, you can see this drive in Disk Management as shown below:

Solution

To solve this issue, you can delete this drive, and then create a new partition with the newer NTFS file system or older FAT32 file system so Windows will be able to recognize it.

Here, we want to share another case to you.

Sometimes, you will find you cannot access your NTFS drive from another device, such as a DVD player, smart TV, game console, or media center device. This is because that many devices, even Microsoft's own Xbox 360, can't read the Windows NTFS file system. And, they can only access drives formatted with the older FAT32 file system. To fix this problem, simply convert it to FAT32.

Minitool Partition Wizard Gpt To Mbr Without Data Loss Code

After seeing why hard drive isn't showing up in Windows and how to fix this issue, let's move onto the next part.

Recover Data from Hard Drive Not Showing up

From the above description, we can see several factors can cause the hard dive or external hard drive not showing up issue. Although you can fix the 'hard drive not showing up' issue according to the solutions we mentioned above, we advise you to recover data at first. Otherwise, the original data saved on the drive which is not showing up will be lost permanently. However, how?

You are probably wondering:

'How do I effectively recover data from hard drive when it is not showing up?'

Right now, MiniTool Power Data Recovery (PCWORLD, a professional IT magazine, speaks very highly of this data recovery software) can help you effectively recover lost data because of its powerful functions.

Now, let’s see the detailed steps.

Download MiniTool Power Data Recovery Trail edition.

Launch this professional tool to get its main interface as follows.

4 different data recovery modules are listed in the main interface of this all-in-one data recovery software.

• This PC focuses on recovering lost or deleted data from damaged, RAW or formatted partitions. And this module is selected by default.
• Removable Disk Drive is designed to recover lost photos, mp3/mp4 files, and videos from flash drives and memory sticks.
• Hard Disk Drive can recover files after partition loss or deletion.
• CD/DVD Drive helps to recover data from formatted or erased CD/DVD discs.

Here, you can click the Hard Disk Drive to recover lost data. After selecting this module, you will see the following window.

Now, select the target hard drive which is not showing up in Windows Explorer, and then click Scan button. In this window, you are able to click Settings to specify needed file systems as well as file types.

Wait for the full scanning finishes to get the best recovery result.

Finally, select all needed files, and save them. It is recommended to store needed files on another drive. Otherwise, the original data will be overwritten.

The trial edition of MiniTool Power Data Recovery can only scan lost data. If you need to recover more data, please choose the paid edition. Here, you might be interested in this post: MiniTool Power Data Recovery License Comparison.

Conclusion

Minitool Partition Wizard Gpt To Mbr Without Data Loss Calculator

Are you still worried about the 'hard drive not showing up' issue? Now, after reading this post, I guess you might have a basic understanding of how to fix this issue.

Should you have any question or suggestion about the hard drive not showing up in This PC or My Computer, please feel free to send your email to [email protected].

Hard Drive Not Showing up FAQ

1. Hard drive is not initialized.
2. Hard drive letter is missing.
3. Hard drive is hidden.
4. Hard drive becomes unallocated.
5. Hard drive has a wrong file system.

Minitool Partition Wizard Gpt To Mbr Without Data Loss Control

1. Initialize hard drive.
2. Assign drive letter.
3. Hide hard drive.
4. Recover hard drive partitions along with data.
5. Format hard drive.

Minitool Partition Wizard Gpt To Mbr Without Data Loss Free

1. Right-click This PC.
2. Choose Manage.
3. Click Disk Management.
4. Right-click the new hard drive.
5. Choose Initialize Disk to initialize it.