Accidentally hidden or missing partitions can prevent access to important files on your Windows PC. In this guide, you’ll learn simple techniques to show hidden partitions using Windows Disk Management, Command Prompt, or professional recovery software, and retrieve lost documents, photos, or system backups without overwriting existing data.
About a year ago I helped my wife build a computer. We ended up using an extra 1TB HDD that was installed in her Dell Optiplex as extra storage on her new computer. Before moving it, I tried to wipe the hard drive for a fresh start and I guess I did something wrong because ever since then the HDD only shows 231GB of useable storage.
We were content with it at the time but it's getting annoying to delete stuff whenever she wants to download a new game. We were thinking of buying her a new hard drive but I would like to know if it is at all possible to recover that extra space because we are tight on cash.
- Question from Tomori
Hidden partitions are areas of a storage device that are intentionally concealed by Windows or by disk manufacturers, such as recovery partitions, EFI system partitions, or system-reserved partitions. These partitions are usually invisible in File Explorer and serve important purposes, like system recovery or boot management. Besides, user errors, disk formatting error or third-party software can hide originally visible disk partitions, leaving valuable data or recovery options temporarily unavailable.
This article provides a practical guide on how to recover or show hidden partitions on Windows PCs. You’ll learn step-by-step methods to locate, unhide, or restore these partitions safely, using built-in tools like Disk Management and Command Prompt, as well as specialized recovery software for more complex cases.
Windows won't hide any disk partitions except critical system partitions. Here are possible reasons if you find hidden partitions on hard disk.
Accidental User Actions: Deleting, shrinking, or modifying partitions incorrectly in Disk Management or third-party tools can hide partitions without fully removing them.
Disk Formatting or Conversion Errors: Converting a disk between MBR and GPT, or formatting it improperly, may render some partitions inaccessible.
System or Recovery Partitions: Windows automatically hides EFI, recovery, and system-reserved partitions to prevent accidental modification.
Third-Party Software Interference: Certain partition managers, backup tools, or system utilities may mark partitions as hidden during operations.
Corrupted Partition Table: File system errors or corrupted partition entries can make a partition appear missing even though the data remains intact.
Virus or Malware Activity: Some malware hides partitions to prevent detection, making space or data inaccessible until resolved.
When a hard drive shows less usable space than expected, it’s often due to hidden partitions created by Windows, disk errors, or user mistakes. Recovering these partitions can restore valuable storage without buying a new drive. Each method below can help you recover hidden partition, you choose a desired on based on your needs.
Disk Management is a built-in Windows tool that can reveal partitions that are hidden but still recognized by the system. This method is safe and requires no additional software, making it a first choice for locating hidden partitions. Press "Win" + "X" and select Disk Management to open it.
👉 For Missing Drive Letter:
Step 1. Look for partitions without a drive letter or marked as "Healthy (Hidden)".
Step 2. Right-click the hidden partition and choose "Change Drive Letter and Paths".
Step 3. Click "Add" to assign a new drive letter and click "OK" to save the changes. The partition should now be visible in File Explorer.
👉 For Free Space or Unallocated Space:
Accidentally deleted partitions appear as Free Space or unallocated and won't show up in File Explorer. You can follow these steps to show hidden partitions:
Step 1. Right click on the unallocated drive and choose "New Simple Volume".
Step 2. Assign a drive letter for the drive and choose whether you want to format it now. If you need to format the drive, it is recommended that you first recover data from it using MyRecover.
👉 For Uninitialized/Unknown Disk:
Step 1. Right click on the SD card and choose "Initialize Disk".
Step 2. Select a partition style (MBR or GPT) based on your needs.
👉 For Offline Disk:
Right click on the disk and choose "Online".
If you're comfortable with command-line tool, Windows offers a buit-in tool-DiskPart-to recover the hidden partition on Windows 10/11. DiskPart can show partitions even when they are not visible in Disk Management. It allows you to unhide or reactivate hidden partitions safely.
Step 1. Locate Command Prompt in the Start menu and right click on it, then choose "Run as administrator".
Step 2. Enter the following command and press "Enter" after each one:
diskpart
select disk 1 (list all disks)
list partition
select partition 2 (select the hidden partition)
assign letter=E (replace E with any free letter).
exit (close DiskPart)
Then, check if the partition appears in File Explorer.
Some partitions may be hidden due to system policies that prevent changes to critical drives. The Local Group Policy Editor can temporarily allow viewing these partitions for administrative tasks. Here's how to do:
Step 1. Press "Win" + "R" and type "gpedit.msc" in the Run dialog, then press "Enter".
Step 2. Navigate to "Computer Configuration" > "Administrative Templates" > "Windows Components" > "File Explorer".
Step 3. In the right panel, click "Standard" and locate "Hide these specified drives in My Computer".
Step 4. Double click on it and set it to "Disabled" if it's enabled. Under "Options" tab, select "Do not restrict drives" to show all hidden partitions.
Step 5. Click "Apply" and "OK" to save changes and restart File Explorer to see the previously hidden partitions.
When Windows tools fail, specialized software such as AOMEI Partition Assistant can scan the disk for hidden partitions and restore them without data loss. It can detect partitions with corrupted table entries or accidentally removed partitions.
Step 1. Download and install AOMEI Partition Assistant on your computer.
Step 2. Run the software and locate the affected disk.
Step 3. Select the partition that is not showing up in File Explorer and right click on it, then choose "Advanced" > "Unhide Partition".
Step 4. Click "OK" to confirm the change. Preview the found partitions, and click "Apply" to show the hidden partition.
Step 5. Verify that the recovered partitions appear in Windows Explorer.
If a partition is deleted or shows the RAW file system, it will not appear normally in File Explorer. In such a case, trying to recover hidden partition with professional data recovery tool — MyRecover is a good option. It can locate and recover partitions with minimal risk to existing data. It also can scan all hidden partitions on the disk, restore deleted partitions, and recover files stored inside them.
Step 1. Download and install MyRecover on a separate drive to avoid overwriting the affected disk.
Step 2. Run the application and select "Partition Lost Recovery" tab, choose a partition and click "Scan" to search for recoverable files. This will automatically perform a deep scan for the partition.
Step 3. Browse the scan results and choose the files you wish to recover, then click "Recover".
When the files you need to restore are larger than 500 MB, consider upgrading to the Professional version of MyRecover. This version offers unlimited data recovery and can also retrieve files from a computer that fails to boot normally.
Step 4. Select a destination folder to save the files you want to restore.
When the process is done, the message "Files have been recovered successfully" will pop up. Then, you can check and access the recovered files in the destination folder.
Open Disk Management and right click on the deleted partition, choose "New simple volume" to create a new partition. Then, copy and paste the recovered files to the partition.
After recovering or revealing a hidden partition, some users may prefer to hide specific partitions again, especially recovery partitions, EFI partitions, to prevent accidental deletion or modification or to keep sensitive data from being displayed in File Explorer. The following section explains a safe way to hide a partition on Windows without affecting stored data or system stability.
Step 1. Press "Win" + "X" and select Disk Management to open it.
Step 2. Locate the partition you want to hide in the list. Right-click the partition and choose "Change Drive Letter and Paths".
Step 4. Select the assigned drive letter and click "Remove". Once the drive letter is removed, the partition will no longer appear in File Explorer, but the data remains fully intact.
Recovering hidden partitions on an HDD is often possible without replacing the drive, especially when the issue is caused by missing drive letter, formatting errors, or system-level hiding by Windows. As shown in this guide, you can restore access to lost or hidden storage space effortlessly.
Hidden partitions do not always mean lost data. However, if a partition gets deleted, MyRecover can usually recover your lost files and save you from unnecessary hardware replacement, making it an excellent choice for partition data recovery.
Q1: Can raw drive be recovered?
Yes, a RAW drive can often be recovered using data recovery software like MyRecover. The RAW state usually means the file system is corrupted, not that data is gone. Avoid formatting the drive and run a deep scan using MyRecover to extract files before attempting repairs.
Q2: How do I recover photos from my SD card?
Remove the SD card immediately and avoid writing new data. Use a recovery tool like MyRecover to perform a deep scan and locate deleted or lost image files. Photos are often recoverable unless overwritten. Save recovered files to a different storage device to prevent further data loss.
Q3: How to recover a RAW drive without formatting?
Connect the drive and use data recovery software like MyRecover to scan it directly without formatting. Many tools can rebuild file structures or extract files from RAW partitions. Do not initialize or format the drive, as this reduces recovery chances by overwriting metadata needed for restoration.
Q4: Can you fix a corrupted SSD raw disk without losing data?
Yes, in many cases. First, avoid formatting. Use recovery software such as MyRecover to extract data. Once files are secured, you can rebuild or reformat the SSD. Direct repairs may work if corruption is logical rather than physical.
Q5: Why did my pictures disappear from my SD card?
Photos may disappear due to accidental deletion, file system corruption, virus infection, or improper ejection of the SD card. In some cases, they are hidden rather than deleted. Using recovery software like MyRecover or checking hidden folders can often restore missing images.
Q6: How to recover permanently deleted data from SD card?
Stop using the SD card immediately to avoid overwriting data. Use professional recovery software like MyRecover to perform a deep scan and recover deleted files. Even "permanently deleted" data often remains until overwritten, so quick action significantly increases recovery success rates.