💾 Restore Accidentally Deleted Partition

Last updated: October 31, 2025

Recover partitions accidentally deleted in Disk Management, reassign drive letters, and recover data from unallocated space

Overview

Accidentally deleting a partition in Disk Management can seem catastrophic, but your data is likely still there. This guide shows you how to reassign missing drive letters, recover deleted partitions with DiskPart, find data in unallocated space, and protect partitions from future accidents.

What this helps with

What to expect: Hard difficulty • usually about 30-60 minutes.

This is one of 30 Recovery & Emergency Fixes fixes in the WindowsHelper library. The full step-by-step fix lives in the WindowsHelper app.

Related fixes in Recovery & Emergency Fixes

• 🚨 Fix Boot Failure Problems

  Practical, Recovery & Emergency Fixes-focused guidance for Boot Failure Problems — what's happening and how to fix it.

  Medium45-60 minutes
• 🛡️ Create Disaster Recovery Plan

  An overview of Create Disaster Recovery Plan and how the Recovery & Emergency Fixes guide handles it.

  Medium45-60 minutes
• 💾 Create Windows Recovery Media

  An overview of Create Windows Recovery Media and how the Recovery & Emergency Fixes guide handles it.

  Medium30-45 minutes
• 🔄 Factory Reset Guide

  A Recovery & Emergency Fixes guide covering Factory Reset Guide — what it involves and how it's handled.

  Medium30-45 minutes
• Fix Corrupted Windows Installation

  Corrupted Windows Installation, explained — what's going on and how the Recovery & Emergency Fixes guide approaches fixing it.

  Medium30-45 minutes
• 🛠️ Fix Registry Corruption

  Repair a corrupted Windows Registry causing crashes, boot failures, or error messages. Covers automated repair tools, manual hive recovery, and system restore methods.

  Medium45-60 minutes
• 🔧 Fix Safe Mode Access Issues

  Fix when you can't get into Safe Mode. Covers broken boot menu, BitLocker recovery prompts, black screen in Safe Mode, and alternative diagnostic boot methods.

  Medium45-60 minutes
• 🔄 Emergency File Recovery

  Practical, Recovery & Emergency Fixes-focused guidance on Emergency File Recovery.

  Medium45-60 minutes
• 🔄 Recover from Failed Updates

  Practical, Recovery & Emergency Fixes-focused guidance for Recover from Failed Updates — what's happening and how to fix it.

  Medium45-60 minutes
• 🛡️ Recover from Malware Infections

  A dedicated Recovery & Emergency Fixes guide covering Recover from Malware Infections, from common causes to the resolution.

  Medium45-60 minutes