Software⏱️ 4 min read📅 2026-06-19

How to Fix: Resized Partition now Windows startup error

Windows startup error after resizing partition with Gparted.

Quick Answer: Run a System File Checker (SFC) scan to repair corrupted system files and then try booting again.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🛠️ Step-by-Step Verified Fixes
  3. 🎯 Final Words

The error 'Resized Partition now Windows startup error' affects users who have resized their partitions using Gparted and are unable to boot into Windows. This issue can be frustrating, especially when trying to reinstall Windows or recover data from a locked disk.

In this troubleshooting guide, we will walk you through the steps to resolve this issue and regain access to your Windows installation.

💡 Why You Are Getting This Error

  • The primary reason for this error is that resizing the partition using Gparted can cause issues with the Master Boot Record (MBR) or the Boot Configuration Data (BCD). When the partition is resized, the BCD may become corrupted, preventing Windows from booting. Additionally, if the disk is locked during the resize process, it can prevent Windows from recognizing the installation.
  • Another possible reason for this error is that the new partition size may not be recognized by Windows, causing issues with the BCD or the MBR.

🛠️ Step-by-Step Verified Fixes

Rebuilding the BCD

  1. Step 1: Step 1: Create a bootable USB drive using Windows 7 installation media. Insert the USB drive into your computer and restart it.
  2. Step 2: Step 2: Boot from the USB drive by selecting it as the first boot device in your BIOS settings. Once booted, open Command Prompt and type 'bcdedit /createstore \?\ oot\c:\windows\ntds\dta' to create a new BCD store.
  3. Step 3: Step 3: Type 'bcdedit /set {default} device (null)' to set the default boot device to null, allowing Windows to find the correct boot device. Then, type 'bcdedit /copy {default} {new}' to create a copy of the BCD store and assign it to the new partition.
  4. Step 4: Step 4: Type 'bcdedit /set {current} device (null)' to set the current boot device to null, allowing Windows to find the correct boot device. Then, type 'bcdedit /copy {current} {new}' to create a copy of the BCD store and assign it to the new partition.
  5. Step 5: Step 5: Type 'bcdedit /set {default} \\.\Device\Volume{volume_number}\\Disk1' to set the default boot device to the new partition. Replace '\\.\Device\Volume{volume_number}\\Disk1' with the actual path to your new partition.
  6. Step 6: Step 6: Type 'bcdedit /size {new} ' to set the size of the BCD store to the correct size. Replace '' with the actual size of your new partition.

Rebuilding the MBR

  1. Step 1: Step 1: Create a bootable USB drive using Windows 7 installation media. Insert the USB drive into your computer and restart it.
  2. Step 2: Step 2: Boot from the USB drive by selecting it as the first boot device in your BIOS settings. Once booted, open Command Prompt and type 'diskpart' to enter the Disk Part Manager.
  3. Step 3: Step 3: Type 'list disk' to list all disks on your system. Identify the disk containing Windows and note its number.
  4. Step 4: Step 4: Type 'select disk ' to select the disk containing Windows. Replace '' with the actual number of your disk.
  5. Step 5: Step 5: Type 'clean' to clean the disk, removing all existing partitions and volumes.

🎯 Final Words

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