Fix the Selected GPT Formatted Disk Partition Not of Type

Gemma posted on Aug 06, 2020 to Partition Manager | How-to Articles

How to Fix the Selected GPT Formatted Disk Issue
The Differences between GPT and MBR

Many users have reported that when they are formatting a raw space or creating a new partition with the unallocated space, they saw an error message saying "the selected GPT formatted disk contains a partition which is not of type 'PARTITION_BASIC_DATA_GUID' and is both preceded and followed by a partition type 'PARTITION_BASIC_DATA_GUID." 

You would see such a message is because you have restored a backup from a smaller GPT partition while the destination disk was using the MBR partition table. You don't need to worry about this issue if you are in this dilemma. In the following parts, you will get all possible solutions to how to fix the selected GPT formatted disk partition not of type problem.

How to Fix the Selected GPT Formatted Disk

How to Fix the Selected GPT Formatted Disk Issue

The reason for this problem is apparent now, and the solution is quite simple. Converting your disk from GPT to MBR, and the problem is all solved. There are many available methods for you to conduct the converting process. Three of the most common and most convenient are concluded in this part.

1. Convert GPT to MBR with EaseUS Partition Master

When dealing with computer partition, what you don't want to encounter is data loss. As a result, we put the method with no data loss in the first place: to convert GPT to MBR with EaseUS Partition Master. This tool is specialized in computer partition management, and can directly convert GPT to MBR without data wipe and volume deletion.

Now download EaseUS Partition Master and follow the guide to solve the problem of how to fix the selected GPT formatted disk.

Download Now

 Windows 10 is supported


Step 1: Install and open EaseUS Partition Master on your Windows computer. 

open EaseUS Partition Master

Step 2: Right-click the GPT disk that you want to convert and select "Convert to MBR". Then, you will add a pending operation.

convert GPT to MBR

Step 3: 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. 

convert GPT to MBR

2. Convert GPT to MBR in Disk Management

You can also change the partition format in the Disk Management on the computer. But before you conduct this method, please make a full backup of your data and close all running programs.

Step 1. Run as an administrator in Windows. Go to Control Panel > Administrative Tools > Computer Management.

Enter Computer Management

Step 2. Click Disk Management under Storage, right-click a volume and choose Delete Volume. Repeat this operation to delete all your volumes.

Delete All Volume

Step 3. Right-click the GPT disk that you want to change, and then click Convert to MBR disk.

3. Convert GPT to MBR with Diskpart Command Prompt

Another solution you can try is to execute the process with the Command Prompt. This solution also contains volume deletion. Please remember to make backups.

Step 1. Run as an administrator, press Win, and select "Command Prompt."

Step 2. Type the command diskpart, then type list disk and press Enter.

Step 3. Then type select disk 1 if disk 1 is the GPT disk. Once selected the GPT disk, type clean to remove all the data on this disk.

Step 4. Now type convert MBR and press Enter to proceed.

Convert with Command Prompt

When converting process is done, type exit to close Command Prompt.

The Differences between GPT and MBR

In case some users are not familiar with GPT and MBR, we'd like to tell you the basic knowledge of these two terms and differences between them.

Both MBR and GPT are partition styles that apply to Windows computers. MBR was introduced a bit earlier than GPT. It was first introduced in 1983, while GPT didn't appear until the late 1990s.

  • Different Structures

One noticeable difference between GPT and MBR is the structure. MBR consists of three parts: master boot code, a partition table for the disk, and the disk signature. GPT has a more complex structure, for it contains more components than that of MBR. If you want to know the detailed information, you can read MBR vs GPT for further exploration.

  • Different Partition Amounts

Another difference is the supported partition amounts. MBR only supports users to build 4 primary partitions at most. If you want to create more partitions, you need to create an extended one. In a GPT disk, the number of primary partitions is almost unlimited. On a Windows computer, you can create a maximum of 128 partitions on a GPT.

  • Different Boot Mode

The boot mode of theses two partition styles is different. With an MBR disk, you need to boot your Windows in BIOS mode, also called Legacy boot mode. With a GPT disk, you can only boot your Windows in UEFI mode.

The Bottom Line

As you can see, to convert a GPT to MBR, the safest and most reliable method is to seek help from EaseUS Partition Master. It not only supports conversion between GPT and MBR, but also supports to convert a basic disk to a dynamic one, switch the file system from FAT32 to NTFS, and change a logical partition to a primary partition, etc. With EaseUS Partition Master, partition management will be much easier.

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.

Video Tutorial

How to Partititon a Hard Drive on Windows 10/8/7