Summary :

MBR2GPT failed errors

Are you using Windows MBR2GPT.EXE to catechumen your system disk from MBR to GPT? Sometimes, you may become errors that prevent you lot from completing the conversion. In this mail service, MiniTool Sectionalisation Wizard tells you why these errors occur and shows yous how to solve these MBR2GPT failed errors.

Quick Navigation :

  • Introduction to MBR2GPT
  • System Requirements for MBR2GPT Tool
  • MBR2GPT Failed Errors
  • How to Ready MBR2GPT Failed Errors [Solution 6 Is the All-time]
  • Bottom Line
  • User Comments

Introduction to MBR2GPT

Present, many people may know that UEFI boot mode is superior to Legacy kick mode (BIOS vs UEFI). However, Legacy requires MBR while UEFI requires GPT. To utilize UEFI mode, some people may desire to modify the organization deejay from MBR to GPT.

MBR2GPT.EXE is a tool offered by Windows used to catechumen the system disk from Master Boot Record (MBR) to GUID Division Table (GPT) partition style without modifying or deleting data on the disk. It is usually stored in Windows\System32.

The commonly-used MBR2GPT commands are every bit follows:

  • mbr2gpt /validate /disk:0 (This command will validate the disk to see if the deejay is suitable for the conversion. If this control fails, the conversion will definitely fail.)
  • mbr2gpt /convert /disk:0
MBT2GPT commands

Tip:
1. If you don't specify the disk number, it will choose disk 0 by default.
2. You tin run the MBR2GPT.EXE tool in both WinPE and the running Windows system. But if you want to run this tool in the running Windows, y'all must add together "/allowFullOS" to the command.

To run the MBR2GPT tool, you should make certain your PC meets the post-obit requirements. Otherwise, y'all will get errors during or after the MBR2GPT conversion.

  1. You lot should make certain your PC is running Windows 10 version 1703 or later.
  2. Make sure your PC is not in dual boot.
  3. The Windows system must be a 64-fleck one.
  4. The disk you desire to convert should exist a organization disk and MBR disk. In improver, the system sectionalisation should exist active.
  5. The disk has plenty space that is not occupied by partitions (16KB + 2 sectors at the front of the disk; 16KB + i sector at the stop of the disk).
  6. The disk has at most 3 primary partitions (including the subconscious system reserved partition, recovery partitions, etc.).
  7. The disk has no extended/logical partition.
  8. All partitions on the deejay are of MBR types recognized by Windows.
  9. If your Windows 10 Os disk is encrypted by BitLocker, y'all demand to decrypt the Bone disk before the conversion. Afterwards the conversion, you volition be able to encrypt the Bone disk again.
mbr2gpt thumbnail

How tin can you convert MBR to GPT with MBR2GPT.exe in Windows x v1703? Get the answer in this article and make a UEFI boot for Win10.

MBR2GPT Failed Errors

When you lot run the MBR2GPT tool, you may become return codes. Some return codes indicate successful conversion while others signal MBR2GPT failed errors. Here is the tabular array of MBR2GPT.EXE return codes:

Return code Description
0 Conversion completed successfully.
i Conversion was canceled by the user.
2 Conversion failed due to an internal error.
three Conversion failed due to an initialization fault.
4 Conversion failed due to invalid command-line parameters.
5 Conversion failed due to fault reading the geometry and layout of the selected disk.
6 Conversion failed because one or more volumes on the disk is encrypted.
7 Conversion failed because the geometry and layout of the selected disk do not meet requirements.
eight Conversion failed due to error while creating the EFI system partition.
9 Conversion failed due to error installing boot files.
10 Conversion failed due to fault while applying GPT layout.
100 Conversion to GPT layout succeeded, merely some kicking configuration data entries could not be restored.

However, in almost cases, the MBR2GPT tool will give you an error message instead of an error lawmaking. The common MBR2GPT failed errors are as follows:

  1. Disk layout validation failed for disk 0. This disk number may change sometimes. The possible reasons of this error include: more than 3 partitions, unrecognized sectionalisation plant (eg, extended partition), etc.
  2. Cannot find OS partition(s) for disk 0. This deejay number may alter sometimes. The possible reason of this mistake is that there is no BCD data found.
  3. Cannot find room for the EFI organization partition. The possible reasons of this error include: not enough unallocated space, or not enough costless space in the system drive (usually the C).
  4. Cannot create EFI system sectionalization. The possible reasons of this error are similar to the previous error.
  5. Cannot perform layout conversion. The possible reasons of this error include: unsupported version of Windows, OEM partition mapping issue, etc.
  6. LayoutConversion: Layout conversion failed. Error: 0x00000032[gle=0x00000032]; Cannot perform layout conversion. Error: 0x00000032[gle=0x00000032]. This error ordinarily indicates that yous are trying to employ the MBR2GPT tool on an unsupported version of Windows.

These errors will occur when you perform the MBR2GPT convert control. Sometimes, these errors volition be followed past MBR2GPT conversion failed error.

Tip:
ane. At that place are many other MBR2GPT errors like "Failed to enable backup/restore privileges". Just the errors listed here are the most common ones.
2. If you don't know what issue causes your MBR2GPT failed error, you tin can try finding the log files. The paths are as follows: C:\Windows\setupact.log and C:\Windows\setuperr.log.

How to Fix MBR2GPT Failed Errors [Solution 6 Is the Best]

In this part, I list the most possible solutions for each MBR2GPT failed mistake. You lot can try them.

1. Solution for Unsupported Windows Version

  • Press Windows key + R to call out the Run box.
  • In the Run box, blazon "winver" and printing Enter. You volition get the OS version and build.
  • Open File Explorer, right-click This PC and choose Properties. Check System type and you volition know whether your PC is running 64-flake OS.
check Windows version

If your Windows version is earlier than Windows ten version 1703, you merely need to upgrade your Windows to the latest version. But if your Windows is 32-bit, y'all need to fresh install the 64-bit Windows.

How to Upgrade 32 Bit to 64 Scrap in Win10/8/seven without Data Loss

2. Solution for Disk Layout Validation Failed

If you get disk layout validation failed for disk 0 error, you can do as follows:

  • Open Run box.
  • Type "diskmgmt.msc" and printing Enter to open Disk Direction. In this tool, check the layout of the system disk.
check the layout of the system disk

If there are extended partitions, you lot should convert them to chief partitions (or delete them); if there are other unrecognizable partitions, you should format or delete them; if in that location are four or more partitions, you should merge them or delete until there are 3 or less partitions on the disk.

Tip: If you plan to format or delete partitions, please back up information to external drives in advance. Then, y'all can delete partitions in Disk Management.

3. Solution for Cannot Observe OS Segmentation(south)

If you go the "MBR2GPT cannot find Bone partition" error, it may hateful that the BCD data is decadent. You lot can run the following command to prepare the BCD data:

  • bcdboot c:\Windows /f bios /s c:

Some people have reported that this method worked for them and you can take a effort.

four. Solution for EFI System Partition Failure

If you get the "cannot find room for the EFI system sectionalization" or "cannot create EFI system partition" error, the solution is to brand certain there are enough unallocated space on the disk and free space in the C drive.

Some people report that they accept solved this issue by shrinking the C bulldoze to create unallocated space, and then moving the unallocated infinite to the front end of the deejay. To do this, I recommend you to apply Movement/Resize feature of MiniTool Partition Wizard, because Windows can't consummate this chore. In addition, this feature is free.

Tip: The unallocated space should be large enough. 1GB is recommended.

5. Solution for Cannot Perform Layout Conversion

Some people report that they have solved the "cannot perform layout conversion" upshot by using the following command:

  • exe /convert /deejay:0 /map:222=af9b60a0-1431-4f62-bc68-3311714a69ad /allowFullOS

But this control will convert the disk to dynamic disk and crusade some errors. Therefore, some people suggest using the post-obit command instead:

  • exe /convert /disk:0 /map:222=ebd0a0a2-b9e5-4433-87c0-68b6b72699c7 /allowFullOS

This command will successfully convert the disk partitioning structure to GPT but maintain the disk as a Basic deejay.

Note: The higher up commands may be only available to Dell PC, because the 222 stands for the Dell OEM recovery partition on the MBR disk.

six. An All-in-one Solution for MBR2GPT Failed Error

Causes for MBR2GPT conversion failed issue are various. It's possible that in that location are other unknown causes for the MBR2GPT failed fault. If you don't know how to solve this consequence, or these solutions don't piece of work, you tin can endeavour MiniTool Partition Wizard.

This tool can besides convert a disk from MBR to GPT without information loss. In add-on, information technology tin can apply to both system disks and non-system disks. But to apply it to the system disk, you should get the Pro or higher edition. Here is the guide:

Tip: Before using this tool to convert the organization disk from MBR to GPT, please make certain your system is 64-bit commencement.

Free Download

Step ane: Create a USB bootable media. MiniTool Division Wizard can perform the conversion without this pace. But to avert any accidents, I recommend you to consummate this step.

  • Connect a USB bulldoze to PC.
  • Launch MiniTool Partition Wizard and go to its main interface.
  • Click Bootable Media so follow the on-screen instructions to create a USB bootable media.
create a bootable media

Step 2: After the bootable media is created, restart your PC and press the BIOS key to enter the BISO interface (or press the boot menu cardinal to open then kicking bill of fare). Prepare the USB drive every bit the first boot device and save changes. Hence, the PC can boot from the USB drive.

Footstep 3: After the PC boots from the bootable media, please do non do any operations. You simply need to wait until MiniTool Division Wizard opens automatically.

Step 4: Right-click on the system disk and choose Convert MBR Deejay to GPT Disk. Click Yes and then Yeah again to ostend ii warnings.

choose Convert MBR Disk to GPT Disk

Step 5: Click the Apply push to execute the conversion functioning.

click the Apply button

Pace half-dozen: After the conversion is completed, restart PC and enter BIOS again. This time, you should prepare the hard bulldoze back to the first boot device and and then enable UEFI kicking mode. Then, you can relieve changes and boot up the PC.

Here is a post talking about how to ready MBR2GPT failed errors. It lists some almost common errors and offers solutions corresponding to these errors. If y'all fail to covert the arrangement disk from MBR to GPT by using the MBR2GPT tool, this post may help you. Click to tweet

Bottom Line

Is this post useful to you? Have you encountered other MBR2GPT conversion failed errors? Do you know other methods that tin solve the MBR2GPT failed errors? Please leave a annotate in the post-obit zone. In add-on, if you have difficulty in using MiniTool Partition Wizard, delight contact us via [email protected]. We volition become dorsum to you as soon every bit possible.