How to Restore Lost Partition Windows 10/11?

How to restore lost partitions Windows 10/11? This post shares with you a professional partition recovery tool to help you restore the lost or deleted hard disk partitions.


By Lora / Updated on March 25, 2022

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One of my hard disk partitions is missing

"I have Lenovo IdeaPad Y700 15isk laptop (1TB HDD - 256 SSD), when I upgrade windows 7 to windows 10 I manage my hard drive into three partitions namely [ Local Disk (C:), Local Disk (E:), Local Disk (F:) ]. My laptop works safely with those partitions for a year but suddenly two partitions [ Local Disk (E:), Local Disk (F:) ] disappeared. Thanks for your help!!!”

Partitioning a hard disk has numerous advantages. It helps users to classify different files and have one partition for saving confidential data. But when an important file or folder isn’t where we expect it to be, it must be a disaster for everyone.

Hard disk partitions could be lost due to kinds of reasons. Typically, this issue is caused by users’ errors. Partitions may be deleted by accident. Once deleted, the data stored in the partitions will be lost together. Luckily, there is still a chance to recover the lost partitions and data if not overwritten by new data. Professional partition recovery software would be the best choice to recover lost hard disk partitions without backup files.

How does a partition become lost?

If you couldn’t find the lost partitions, you may wonder why? There are so many potential causes for missing or inaccessible hard disk partitions. In short, six main reasons could explain why a partition becomes lost.

Accidental deletion. When users manage their hard drives in Disk Management or using partition manager tools, they may accidentally delete a partition.
Malware is another common cause for many users. As viruses become more sophisticated, they can now target parts of the operating system that were previously inaccessible.
Data corruption. If your operating system or file system becomes corrupted, the hard drive may not perform properly. As a result, partitions may become lost or corrupted.
Power outages. A sudden power surge or power outage can disrupt the drive's operations.
Bad sectors. If there are bad sectors or tracks on the hard disk, they will stop the partitions from being recognized.
Invalid partition table. If the partition table is lost or corrupted, the partition couldn’t be recognized by the operating system or the Windows won’t boot.

What is the best partition recovery software?

If you act quickly after finding the partition is missing, you are able to recover the lost partition in Windows 10/11. Stop using the computer to avoid data stored in the lost partition from being overwritten.

You’d better not format the hard disk/partitions or rebuild the partition table to increase the chance of partition and data recovery. After that, you need to pick a professional partition recovery tool to help you restore the lost partition in easy steps. There are many partition recovery software in the market, but how do pick up the best one?

Key points of professional partition recovery tools:
Comprehensive. Applies to all-around partition loss scenarios.
 Convenient. Easy-to-operate, even green hands can easily deal with.
 Versatile. Not only has partition recovery wizard, but several utilities.
 Compatible. Supports Windows 11/10/8/7/XP/Vista/Server and different file systems: NTFS, FAT/FAT32, Ext3/Ext4 partition recovery.
Competitive. Experienced research and development team and advanced technology.

To consider the key points above, AOMEI Partition Assistant Professional is it! Designed by more than 10 years R&D team, it not only help users recover lost partition in Windows 11/10/8/7 within three simple steps, but has many practical functions to assist users in managing partitions easily.

With AOMEI Partition Assistant Professional, you could easily manage your disk partitions with basic functions like “create partitions, delete partitions, format partitions, change drive letter, shrink partition, extend partition”.

Moreover, it has many advanced features like “convert MBR and GPT without deleting partitions, move partition, create bootable media, merge partition, format large hard drive (over 32GB) to FAT32, allocate free space from one partition to another, disk clone, App mover, etc”

Download and install AOMEI Partition Assistant Professional Demo.  Follow the steps below to get the method of use to recover lost partitions in Windows 10/11.

Download Demo Win 11/10/8.1/8/7/XP
Secure Download

Steps to restore lost partition Windows 10/11 via AOMEI Partition Assistant

Step 1. Launch AOMEI Partition Assistant and select “Partition Recovery Wizard” in the left panel. Choose the disk which includes the lost partition and click “Next”.


Step 2. Select Fast Search. It is recommended to choose “Fast Search” the first time for time-saving.


Step 3. The partition recovery program will list all lost or deleted partitions on the disk. Select the lost partition you want to recover and click “Proceed”. Lost partition recovery will be completed in seconds.


Further FAQ about lost partition recovery

Can System Restore recover deleted partitions?

System Restore saves images of important files in a compressed file hidden within the "System Volume Information" folder. Windows won't let you open the folder, so you'll have to rely on the System Restore tools to see what's inside.

When you delete a partition, you lose access to its contents, including the SVI folder for that partition, and System Restore will not be able to recover the data. Therefore, you’d better use a professional partition recovery tool to restore deleted partitions.

Can I use the recovery partition to restore lost/deleted partitions?

On most systems, the manufacturer creates a recovery partition on the hard drive, which contains an image of your system as it was when it was shipped from the factory. If your system needs to be reset, you can do so using the recovery partition.

But it means that any apps, files, or settings customizations you've made before will be lost. As a result, using recovery partitions to restore lost or deleted partitions should be the last resort. If you accidentally deleted recovery partition, you could still use AOMEI Partition Assistant to retrieve it.

How to avoid partition loss?

  • Keeping good habits of using computers. Use anti-virus software on the computer and do not download unproven or illegal software from the Internet.
  • Using a free partition manager tool like AOMEI Partition Assistant to make disk management like resizing partitions, splitting partitions, merging partitions, etc.
  • Make regular backups of systems, hard disk, partitions to keep your data safe. It’s recommended to use the freeware-AOMEI Backupper to make copies of important files and partitions.
Lora · Editor
Lora is an editor of AOMEI Technology. She is also a tester and editor of AOMEI Data Recovery Tools. -- "Keep testing, write the most useful tutorials for helping people recover the lost data for Windows and phones" is the most meaningful thing for her. Dedicated to creating helpful tutorials, she hopes her tutorial can assist users to effortlessly solve data loss problems on their personal computers and mobile phones.