Automatically translated.View original post

MBR2GPTで「Cannot find OS Partition(s) for disk 0」?

Have you ever had trouble with "OS partition not found" during conversion with MBR2GPT?

The cause is a boot configuration data or partition recognition error.

Partition Assistant allows intuitive MBR to GPT conversion rather than difficult manual repair!

Even beginners can use it with confidence, so please try it.

# MBR2 GPT # Windows 10 # GPT conversion Disk Management # error resolution

2025/9/9 Edited to

... Read moreMBR2GPTツールはWindows 10以降でMBRディスクをGPTに変換する便利な機能ですが、『Cannot find OS Partition(s) for disk 0』というエラーが出るケースは意外と多いです。このエラーは主に、ブート構成データ(BCD)の破損やパーティション構造の認識エラーが原因で発生します。私自身も過去にこのエラーに直面し、コマンドプロンプトでの手動修復は非常に煩雑で時間がかかりました。 そこでおすすめしたいのがPartition Assistantというサードパーティ製のディスク管理ツールです。このソフトはGUIが直感的で使いやすく、MBRからGPTへの変換を安全にかつ確実に行えます。私が試した際は、システムパーティションやブートファイルの状態を自動検出し、不整合があっても簡単な操作で修正できました。 また、変換前には必ず重要なデータのバックアップを取ることが大切です。万が一トラブルがあってもデータ損失のリスクを抑えられます。変換作業中は他の作業を控え、ノートPCは電源に接続して安定した環境で行いましょう。 こうしたステップを踏めば、MBR2GPTのエラーを恐れずに安全にディスク変換を行えます。初心者の方でもPartition Assistantを利用すれば、複雑なブート情報の修正を意識せずにスムーズに作業ができるためおすすめです。

Related posts

How to Fix “MBR2GPT Cannot Find OS Partition”
If you meet the “MBR2GPT cannot find OS partition” error message when using the MBR2GPT.exe tool, you can refer to this post to get the the workable solution and reliable alternative. #mbr #gpt #partition #windows #convert
tech_buggie

tech_buggie

0 likes

MBR2GPT Cannot Find OS Partition? Fix it Now!
If the “MBR2GPT cannot find OS partition” error appears while using the MBR2GPT.exe tool, this guide will walk you through effective fixes and introduce a dependable alternative solution. #mbr #gpt #partition #convert #windows
techease_zone

techease_zone

0 likes

Best Way to Fix “MBR2GPT Cannot Find OS Partition”
Normally, you can use the MBR2GPT.exe tool to convert a boot disk from MBR to GPT. However, in some cases, an error message saying “MBR2GPT cannot find OS partition” may appear. Don’t panic—there are reliable ways to fix this issue. #mbr #gpt #partition #windows #convert
Techcrafter

Techcrafter

0 likes

How to Convert MBR to GPT Without Data Loss
Can’t upgrade to Windows 11 because your disk is MBR? You'e not alone. This quick guide shows how to convert MBR to GPT without data loss in just a few simple steps. With Partition Assistant, you can safely switch disk styles while keeping all your data intact. #mbr #gpt #conversion #di
SmoothTechie

SmoothTechie

0 likes

3 Steps to Migrate Windows 10 to SSD?
If you need to move Windows 10 directly to an SSD without reinstalling OS, you can follow this detailed step-by-step guide to make it. Giveaway License Code: AMAB-CQM69-746DU-TAR0D #migrate #windows #windows10 #ssd
tech_buggie

tech_buggie

2 likes

Create Windows 11 To Go on Any USB Drive
Want a portable Windows 11/10/8/7? With Partition Assistant, you can make a Windows To Go USB in just a few simple steps – no official certification needed! #wintogo #Windows11 #USB #system #techtips
Tech SOS Hub

Tech SOS Hub

3 likes

Our VAN TOUR is here!! Let us know if you have any questions! #vanbuild #tour #vantour #vanlife #tinyhome
Wade and Dani | Van Life | UGC

Wade and Dani | Van Life | UGC

151 likes

Cadillac Escalade with full partition and VIP seats #cadillacescalade #escalade #vipseats #vipseating #luxuryseats
suv-vipseats

suv-vipseats

2 likes

Extend Volume Greyed Out? 2 Working Solutions!
Is the "Extend Volume" button greyed out in Windows Disk Management? This video shows you how to unlock the option safely. You can also use Partition Assistant to extend partitions without limitations. #disk #partition #extend #diskmanagement
SmoothTechie

SmoothTechie

0 likes

How to Delete a Recovery Partition Safely?
This guide explains whether it's possible to safely remove the recovery partition and how to do it. It's essential to back up your Windows system before deleting any recovery partition. #recovery #partition #delete #backup #system
SmoothTechie

SmoothTechie

0 likes

How to Fix MBR2GPT Error on Windows 11/10/8/7
If you encounter the 'MBR2GPT error' when converting MBR to GPT, try using Partition Assistant. It simplifies the disk conversion process between MBR and GPT, making it quick and safe. #mbr #gpt #conversions #error #fix
SmoothTechie

SmoothTechie

1 like

Make Windows 11 Shrink Partition Unmovable Files
How can Windows 11 shrink partition unmovable files? Below is a complete guide to help you shrink the partition size without disabling system files. #shrink #partition #volume #drive
tech_buggie

tech_buggie

3 likes

Extend Volume Greyed Out in Disk Management?
Is the Extend Volume option greyed out in Windows Disk Management? In this video, I explain the real reasons behind the greyed-out option and show how Partition Assistant helps you extend volumes without limits. #extend #harddrive #partition #resize #windows
TechEase

TechEase

0 likes

Fixed: Check Disk Access Denied in CMD on Windows
This video shows how to solve “check disk access denied” issue while you run CHKDSK in CMD. Two effective methods are covered. #check #disk #access #denied #cmd
tech_buggie

tech_buggie

0 likes

3 Steps to Convert MBR to GPT without Data Loss
How to convert MBR to GPT without losing data? Follow this guide to convert MBR disk to GPT without data loss step by step in Windows 11, 10, 8, 7. #convert #mbr #gpt #windows #conversion
techease_zone

techease_zone

1 like

Convert FAT32 to NTFS Without Losing Data
Still using FAT32 and stuck with the 4GB file limit? It's time to upgrade. In this video, I'll show you how to convert FAT32 to NTFS without formatting. No data loss, no complicated steps. #ntfs #fat #fat32 #conversion #disk
SmoothTechie

SmoothTechie

0 likes

"Convert to GPT" Grayed Out in Windows 11/10?
If the "Convert to GPT" option is grayed out, it usually means your disk isn't empty. We'll show you how to safely convert your disk to GPT with or without deleting partitions. #gpt #mbr #conversion #windows #disk
SmoothTechie

SmoothTechie

0 likes

How to Move EFI System Partition to Another Disk
How to move EFI system partition to another disk? The most reliable way is to clone it. This guide offers you a professional disk cloning tool to help you move EFI partition easily and quickly. #move #efi #system
techease_zone

techease_zone

1 like

Extend Volume Greyed Out? Fix It Now!
Extend Volume greyed out? Disk Management has many limits, but the solution is simple. In this video, I will show you how to extend volumes with Partition Assistant. Get started now! #extend #harddrive #partition #resize #windows
SmoothTechie

SmoothTechie

2 likes

How to Move Recovery Partition in Windows 11/10
Want to move recovery partition in Windows 11/10/8/7? In this video, a trusted partition manager called Partition Assistant will be introduced to relocate it safely and quickly. #move #recovery #partition #windows
techease_zone

techease_zone

0 likes

How to Fix RAW Partition without Losing Data
How to fix RAW partition without losing data in Windows 11/10/8/7? This video will walk you through the full guide on repairing RAW partition with built-in and third-party tools. #raw #partition #fix #format
techease_zone

techease_zone

0 likes

How to Move EFI Partition to Another Disk
Need to move EFI partition to another disk Windows 11? This guides provides clear, step-by-step instructions for cloning the EFI boot partition to a new drive quickly and effortlessly. #move #efi #partition
tech_buggie

tech_buggie

0 likes

How to Fix Format Hard Drive Gets Stuck in Windows
This video presents two simple and effective methods to resolve the “format FS=NTFS stuck at 0%” issue in Windows 11, 10, 8, or 7. #format #disk #stuck #windows
techease_zone

techease_zone

2 likes

DiskPart: Delete a Protected Partition in Windows
Have you seen the error "Cannot delete a protected partition..." when trying to use DiskPart? This guide will show you step by step how to force delete a protected partition in Windows 10/11. #diskpart #partition #delete #protected #pctips
SmoothTechie

SmoothTechie

0 likes

How to Move Recovery Partition without Data Loss?
How to move recovery partition in Windows 10? Follow the step-by-step tutorial for a safe and quick way to move recovery partition to another place without losing data. #move #recovery #partition
tech_buggie

tech_buggie

1 like

How to Convert MBR to GPT Without Data Loss | Safe
Looking for a way to convert MBR to GPT without data loss? This step-by-step tutorial will guide you through the entire process using both Windows built-in tools and third-party software. #ConvertMBRtoGPT #MBRtoGPT #WithoutDataLoss #Windows11 #DiskConversion #PartitionStyle #TechGui
tech hu

tech hu

1 like

How to Resize and Move Partition in Windows 11?
Learn how to resize and move partitions on your Windows 11 PC safely. Partition Assistant helps you manage disk space without losing data. Perfect for optimizing your storage! #resize #move #partition #windows11
SmoothTechie

SmoothTechie

0 likes

How to Change Partition Size without Losing Data
How to change partition size without losing data? Learn two easy and effective methods to adjust the partition size in Windows 11/10/8/7 as you need. #change #partition #size #resize #windows
techease_zone

techease_zone

0 likes

How to Convert MBR to GPT Without Data Loss | Safe
Looking for a way to convert MBR to GPT without data loss? This step-by-step tutorial will guide you through the entire process using both Windows built-in tools and third-party software. #ConvertMBRtoGPT #MBRtoGPT #WithoutDataLoss #Windows11 #DiskConversion #PartitionStyle #TechGui
techsheldon

techsheldon

1 like

Fix Diskpart Delete Partition Override Not Working
If you want to force delete one partition but find Diskpart delete partition override not working, don’t worry, this video will show you why it happens and how to fix it easily. #delete #partition #override
tech_buggie

tech_buggie

0 likes

How to Recover Lost or Deleted Hard Disk Partition
Deleted your disk partition by mistake? No worries! Discover two ways to recover a lost hard disk partition. Act quickly to avoid overwriting your data. #recovery #partition #lost #delete #disk
TechEase

TechEase

0 likes

How to Make Windows 10 Move Partition to End
Looking for an easy way to make Windows 10 move partition to end of disk? Try a professional disk manager mentioned in this video to reposition partition easily. #windows #move #partition
techease_zone

techease_zone

0 likes

How to Move Partitions Windows 10 Step by Step
How to move partition in Windows 10 or 11? This video will bring you a reliable disk manager to simply the process of rearranging partitions effortlessly. #move #partition #windows
tech_buggie

tech_buggie

1 like

2 Ways to Convert System Disk to GPT
Need to convert system disk to GPT, but not want to reinstall the OS? Here, you can learn how to convert MBR system disk to GPT without losing data or Windows operating system in Windows step by step. #convert #conversion #system #disk #gpt
tech_buggie

tech_buggie

1 like

MBR vs GPT
Choosing the right partition style is crucial for your drive's performance. Here, we break down the differences between MBR and GPT and show you two easy methods (CMD and Partition Assistant) for conversion. #mbr #gpt #conversion #disk #harddrive
SmoothTechie

SmoothTechie

1 like

Looking for a powerful partition manager to take control of your disks? Whether you want to extend your C drive, format a USB, clone a hard drive, or convert MBR to GPT, this guide covers the best tools and methods. #PartitionManager #DiskManagement #Windows10 #Windows11 #ResizePartit
tech hu

tech hu

2 likes

Steps to Make Windows 10 Move Recovery Partition
Can Windows 10 move recovery partition? Yes, you can easily move healthy recovery partition Windows 10 with a reliable partition manager called Partition Assistant, and here comes a step-by-step tutorial. #move #recovery #partition #windows10
Techcrafter

Techcrafter

1 like

USB Only Shows 900MB? Fix It in 1 Minute
If your 32GB or 64GB USB suddenly shows only 900MB, don’t panic. It’s not broken — the partition table was just rewritten after flashing an ISO. Follow these steps to recover the USB drive and get back full storage capacity safely. #tech #hacksyoudidnotknow #learnonlemon8 #USB #fyplemo
Moon Bureau

Moon Bureau

1 like

SSD Migration Software: Upgrade Your PC Now
Want to upgrade from HDD to SSD without reinstalling Windows? Use SSD migration software to safely clone your old drive. Move your OS, apps, and files while keeping your PC bootable. #ssd #clone #migration #software
Tech SOS Hub

Tech SOS Hub

1 like

Looking for a powerful partition manager to take control of your disks? Whether you want to extend your C drive, format a USB, clone a hard drive, or convert MBR to GPT, this guide covers the best tools and methods. #PartitionManager #DiskManagement #Windows10 #Windows11 #ResizePartit
techsheldon

techsheldon

1 like

How to Extend C Drive in Windows 10/11 Without Losing Data | Step-by-Step Guide Need to extend C drive but the “Extend Volume” option is greyed out? This step-by-step guide will help you expand your system partition and free up space without reinstalling Windows. #ExtendCDrive #Windows10 #W
tech hu

tech hu

1 like

2 Ways on How to Delete Partition in Windows 11/10
Wondering how to delete partitions in Windows PCs? This video presents two reliable methods with clear instructions so you can delete partitions easily and safely. #delete #partition #windows
tech_buggie

tech_buggie

0 likes

Los beneficios👉🏼The main goal is to detect and remove precancerous polyps, which reduces future colorectal cancer risk. It also diagnoses conditions like colitis, diverticulosis, and unexplained abdominal pain or bleeding. And eating healthy foods is very important 👉🏼 trying this ceviche and gua
Elizabethmarcano.official

Elizabethmarcano.official

0 likes

Can't format to Ext4 on Windows? Try this!
Windows can't read or format Ext4 natively. But no worries! With Partition Assistant, you can easily format your drive to Ext4 on Windows. #format #ext4 #windows #disk
SmoothTechie

SmoothTechie

0 likes

Accidentally Deleted Your Partition? Get It Back!
Accidentally deleted an entire partition while installing, formatting, or cleaning up? 😱 Suddenly a whole drive is gone, Windows won't start, or important files have disappeared? That's exactly what this video is all about! #delete #recovery #partition #windows
TechEase

TechEase

1 like

GPT Protective Partition Management
Trying to copy a large file to a FAT32 drive but Windows won't let you? That's the 4GB file size limit at work. 👉 The real fix is converting FAT32 to NTFS - and yes, you can do it without formatting. In this video, we show you 2 easy and safe ways to convert FAT32 to NTFS on Windows 10/11
SmoothTechie

SmoothTechie

1 like

Transfer Windows OS to New Drive
Want to move your Windows system to a new hard drive? Follow this complete guide to learn the key steps and tools you need - hassle-free. #transfer #system #windows #hardrive Unlock Premium Today! ✨ Free 30-day access: code.aomeitech.com 💰 Use Special30OFF for instant discount
TechEase

TechEase

2 likes

Neighbor From Hell Finally Gets a Police Visit She Wont Forget #cops #karma
1875.copsusa

1875.copsusa

0 likes

How to Make a VHD File in Windows 10/11
Want to create a virtual hard disk (VHD) to test a new OS or store files safely? This video shows you how to make a VHD using Partition Assistant. Try it now! 👉Get your giveaway license code: code.aomeitech.com 👉Use discount code Special30OFF for extra savings!  #create #vhd #disk #window
PC Techgeek

PC Techgeek

0 likes

Change Drive Letter of a Hard Drive in Windows
Want to change the drive letter of your hard drive without risking data loss? This video shows you 3 ways to do it. Download Partition Assistant and manage your disks effortlessly! #disk #letter #windows #management
SmoothTechie

SmoothTechie

0 likes

Lost Partition Recovery on Windows 10/11
Lost partition showing as unallocated space on Windows? This video shows how to recover data from a lost partition first, then restore the partition safely without overwriting files. Start your free recovery now — details on get.myrecover.com #window
Hakuna Matata

Hakuna Matata

0 likes

C Drive Is Full? Here’s How to Empty It Safely!
Is your C drive running out of space? This video shows practical ways to clean up and free space on your C drive without deleting important files. Try Partition Assistant to extend your C drive easily! #cdrivefull #pctips #cleanup #disk
SmoothTechie

SmoothTechie

1 like

How to Fix a Corrupted MBR in Windows 10/11
Is your Windows 10 PC showing errors like “Operating System Missing” or “Invalid Partition Table”? Don’t worry! In this video, we show you how to repair your MBR using Partition Assistant quickly and safely. #fix #mbr #corruption #repair #windows
SmoothTechie

SmoothTechie

2 likes

How to Fix “Invalid Dynamic Disk” in Windows
Is your dynamic disk showing as invalid? Don’t worry! Watch this video to fix it quickly and easily. With Partition Assistant, you can resolve a variety of disk issues and get your drive back to normal in no time. #dynamic #disk #invalid #fix #windows
SmoothTechie

SmoothTechie

1 like

Tech tutorial: Updating my Anbernic RG40xxv
What you’ll need: -A Windows PC -A microSD card (either the one already in your RG40XXV or a new one) -A microSD card reader -Rufus (free bootable USB writing tool) - Stable internet connection 1. Back up your microSD card (if reusing it) - Insert your microSD card into the card reader
˚ʚ N e o n ɞ˚

˚ʚ N e o n ɞ˚

226 likes

Move Boot Partition in Windows 10? Get it Done!
How to move boot partition in Windows 10 without reinstalling? Try AOMEI Cloner presented in this post to transfer the system partition in Windows 11/10/8/7 with ease. Giveaway License Code: AMAB-CQM69-746DU-TAR0D #move #boot #partition #windows10 #windows
tech_buggie

tech_buggie

2 likes

See more