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How to Disable Windows Reserved Storage & Reclaim Space

April 01, 2026 , ,

📝 Executive Summary (In a Nutshell)

  • Windows Reserved Storage Explained: This feature reserves a portion of your PC's disk space (typically 7GB+) for system updates, temporary files, and driver installations to ensure smoother, more reliable updates.
  • Disabling Reserved Storage: While possible via Registry Editor or DISM commands, it's generally not recommended for most users due to potential risks of update failures and system instability, especially on systems with ample free space.
  • Should You Disable It? Only consider disabling if you have critically low disk space and understand the associated risks. For most, managing other storage hoggers or upgrading storage is a safer alternative.
⏱️ Reading Time: 10 min 🎯 Focus: how to disable windows reserved storage

How to Disable Windows Reserved Storage and Reclaim Your PC's Hidden Space

Windows operating systems, from Windows 10 onwards, include a feature known as "Reserved Storage." This often-overlooked function quietly tucks away a portion of your PC's valuable disk space, typically 7GB or more, for specific system operations. While its intention is to improve the reliability and smoothness of updates, it can be a source of frustration for users struggling with limited storage. If you've ever wondered where some of your drive space went or if there's a way to reclaim it, you've come to the right place.

In this comprehensive guide, we'll dive deep into what Windows Reserved Storage is, why it exists, and most importantly, provide a step-by-step walkthrough on how to disable it. We'll also explore the critical question of whether you should disable it, weighing the benefits of reclaiming space against potential system stability risks. By the end, you'll have all the information you need to make an informed decision about managing your PC's storage.

Table of Contents

What is Windows Reserved Storage?

Introduced with Windows 10 version 1903 (May 2019 Update) and carried forward into Windows 11, Reserved Storage is a feature designed to set aside a portion of your PC's storage exclusively for system-critical functions. This includes Windows updates, temporary files, system caches, and necessary drivers. Microsoft's goal with this feature was to prevent issues arising from insufficient disk space during critical operations, particularly large feature updates.

Historically, when users ran low on disk space, Windows updates could fail, leading to frustrating error messages, incomplete installations, or even system instability. Reserved Storage acts as a buffer, ensuring that even if your primary drive is almost full, there's always a dedicated pool of space available for these essential processes. The size of this reserved space typically ranges from 7GB to 10GB, though it can fluctuate slightly based on your system configuration and installed features. It is automatically enabled on new Windows installations and clean installations, but not necessarily on upgrades from older Windows versions.

Think of it like an emergency fund for your PC's operating system – always there for when critical needs arise, even if your main bank account (your accessible storage) is running low.

Why Microsoft Implemented Reserved Storage

The primary motivation behind Reserved Storage was to enhance the overall user experience and system reliability, especially concerning updates. Microsoft faced significant challenges with Windows Update failures directly attributable to a lack of available disk space. These failures often resulted in:

  • Incomplete Updates: Users would get stuck in update loops or see updates fail repeatedly.
  • System Instability: Partial updates could lead to corrupted system files or unexpected crashes.
  • Frustration: The process of troubleshooting update issues due to low space was time-consuming and annoying for users.

By reserving space, Microsoft ensures that when a major feature update rolls out, or when drivers need to be installed, the system has the necessary room to download, extract, and install files without competing for space with user data or other applications. This proactive approach aims to make the update process smoother, more consistent, and ultimately, less problematic for the end-user. It's a trade-off: a small amount of "hidden" space for greater stability and fewer update woes.

How to Check if You Have Reserved Storage Enabled

Before you decide whether to disable Reserved Storage, it's a good idea to confirm if it's active on your system and how much space it's consuming. Checking this is straightforward:

  1. Open Settings: Press Windows key + I to open the Settings app.
  2. Navigate to System > Storage: In the Settings window, click on "System" in the left-hand pane, then select "Storage" from the options.
  3. View More Storage Settings: Scroll down and click on "Show more categories" or "Advanced storage settings" (the exact wording might vary slightly between Windows 10 and 11 versions).
  4. System & Reserved: Look for the "System & reserved" section. Click on it.
  5. Identify Reserved Storage: Here, you'll see a breakdown of space used by system files, virtual memory, hibernation file, and "Reserved storage." This entry will show you exactly how much space is currently being held aside by this feature.

If you don't see an entry for "Reserved storage," it might not be enabled on your system, or you might be running an older version of Windows 10 that predates the feature's introduction.

The Pros and Cons of Disabling Reserved Storage

Deciding whether to disable Reserved Storage isn't a simple yes or no. It involves weighing the immediate benefit of reclaiming space against potential long-term risks. Here’s a breakdown:

Pros of Disabling Reserved Storage:

  • Reclaim Disk Space: This is the most obvious and often the sole reason users consider disabling it. Freeing up 7-10GB can be significant, especially on devices with smaller SSDs (e.g., 64GB or 128GB).
  • More Control Over Storage: Some users prefer to have complete control over every byte of their storage, without Windows automatically setting aside space.

Cons of Disabling Reserved Storage:

  • Increased Risk of Update Failures: This is the biggest drawback. Without reserved space, if your drive gets too full, Windows updates (especially large feature updates) are more likely to fail, leading to an unstable system or forcing you to manually free up space during critical update periods.
  • Potential for System Instability: Failed updates can leave your system in a partially updated or corrupted state, requiring troubleshooting, system restores, or even a full reinstallation of Windows.
  • Reduced Performance for Temporary Files: Reserved Storage is also used for temporary files created by applications. Without it, if your drive is full, apps might struggle to create necessary temporary files, potentially slowing down or crashing.
  • Minimal Impact for Most Users: On systems with ample storage (e.g., 256GB or more), the 7-10GB reserved space is usually negligible, and the benefits of system stability far outweigh the small gain in free space.

When NOT to disable it: If you have plenty of free space, if you're not comfortable editing the Registry, or if you prioritize system stability and hassle-free updates above all else, it's generally best to leave Reserved Storage enabled.

For more insights into optimizing your PC, consider exploring resources on general system maintenance. A related topic you might find useful is how to optimize your PC for gaming, which often involves similar principles of resource management.

Step-by-Step Guide: How to Disable Windows Reserved Storage

If you've carefully considered the pros and cons and decided that reclaiming the space is worth the potential risks, here are two methods to disable Reserved Storage. Please proceed with caution and consider backing up your system before making Registry changes.

Method 1: Using Registry Editor

This method involves editing the Windows Registry. Incorrect changes to the Registry can cause serious system problems, so follow these steps precisely.

  1. Backup Your Registry (Optional but Recommended):
    • Press Windows key + R, type regedit, and press Enter.
    • In Registry Editor, go to File > Export....
    • Choose a location, give it a name (e.g., "Registry_Backup"), and save it as a .reg file. You can restore this if anything goes wrong.
  2. Open Registry Editor: Press Windows key + R, type regedit, and press Enter. Click "Yes" if prompted by User Account Control.
  3. Navigate to the Correct Path: In the Registry Editor, navigate to the following path: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ReserveManager
    You can copy and paste this path into the address bar at the top of the Registry Editor window and press Enter.
  4. Modify the ShippedWithReserves Value:
    • In the right-hand pane, locate the DWORD (32-bit) Value named ShippedWithReserves.
    • Double-click on ShippedWithReserves.
    • A small "Edit DWORD (32-bit) Value" window will appear. Change the "Value data" from 1 to 0.
    • Click "OK."
  5. Restart Your PC: For the changes to take effect, you must restart your computer.

After restarting, the reserved storage should be disabled, and the space should be reclaimed. You can verify this by checking the Storage settings again as described earlier.

Method 2: Using DISM Command Prompt

The Deployment Image Servicing and Management (DISM) tool can also be used, primarily on Windows 10, though the Registry method is more universally applicable and often required for Windows 11. This method might not work for all versions or system configurations as reliably as the Registry edit for disabling the feature entirely, but it's a good alternative to check. Often, this command is more about checking the status or managing features post-installation.

  1. Open Command Prompt as Administrator:
    • Click on the Start button.
    • Type cmd in the search bar.
    • Right-click on "Command Prompt" and select "Run as administrator."
    • Click "Yes" if prompted by User Account Control.
  2. Check Reserved Storage Status (Optional): You can first check if it's enabled by typing: DISM /Online /Get-ReservedStorageState
    This command will tell you if reserved storage is currently enabled or disabled.
  3. Disable Reserved Storage: To attempt to disable it, type the following command and press Enter: DISM /Online /Set-ReservedStorageState Enabled:Disable
  4. Restart Your PC: Again, a restart is essential for the changes to take effect.

While the DISM command can influence some aspects of reserved storage, the Registry edit is generally considered the more direct and effective method for outright disabling the feature's automatic reservation for future updates. For more on advanced system tools, you might find information on best Windows utility tools insightful.

How to Re-Enable Reserved Storage (If Needed)

If you experience issues after disabling Reserved Storage, or simply change your mind, you can easily re-enable it.

Using Registry Editor:

  1. Open Registry Editor (regedit).
  2. Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ReserveManager
  3. Double-click on ShippedWithReserves and change its "Value data" back to 1.
  4. Click "OK" and restart your PC.

Using DISM Command Prompt (if applicable):

  1. Open Command Prompt as Administrator.
  2. Type: DISM /Online /Set-ReservedStorageState Enabled:Enable and press Enter.
  3. Restart your PC.

Once re-enabled and after a restart, Windows will gradually re-allocate the reserved space, though it might not happen immediately or to the exact previous size until a significant update or system operation triggers it.

Alternative Ways to Free Up Disk Space on Windows

Before resorting to disabling Reserved Storage, consider other, less risky methods to free up space. These generally don't impact system stability and are excellent practices for maintaining a healthy PC:

  • Run Disk Cleanup:
    • Search for "Disk Cleanup" in the Start menu and open it.
    • Select your C: drive and click "OK."
    • Click "Clean up system files" and select your C: drive again.
    • Check boxes for items like "Windows Update Cleanup," "Temporary Internet Files," "Recycle Bin," and "Temporary files." Be cautious with "Downloads" if you don't want to delete them.
    • Click "OK" and then "Delete Files."
  • Use Storage Sense:
    • Go to Settings > System > Storage.
    • Toggle "Storage Sense" to "On" to automatically free up space by deleting temporary files and managing your Recycle Bin.
    • Click "Configure Storage Sense or run it now" to customize its behavior, such as how often it runs and what it cleans.
  • Uninstall Unnecessary Applications:
    • Go to Settings > Apps > Apps & features.
    • Sort by "Size" to identify the largest apps you no longer use.
    • Click on an app and select "Uninstall."
  • Move Large Files to External Storage: Identify large video files, photos, or documents and transfer them to an external hard drive or cloud storage.
  • Delete Temporary Files Manually:
    • Go to Settings > System > Storage > Temporary files.
    • Windows will scan for temporary files. Review the list and select items you want to remove (e.g., "Temporary Internet Files," "Delivery Optimization Files," "Windows Update Cleanup").
    • Click "Remove files."
  • Manage System Restore Points: While useful, System Restore Points can consume significant space. You can adjust the maximum space allocated or delete older points via System Protection settings.

Impact on System Performance and Stability

Disabling Windows Reserved Storage itself typically has a negligible direct impact on your PC's day-to-day performance. You won't notice your applications launching faster or your games running smoother just because you reclaimed 7-10GB. The real impact comes into play during system updates and maintenance.

The primary performance and stability concern revolves around the potential for update failures. When updates download and install, they require a certain amount of temporary space to extract files, create backups, and perform installations. If this space isn't available, the update process can halt, roll back, or complete partially, leading to:

  • Failed Updates: Which means you miss out on security patches and new features.
  • Broken Installations: Potentially leaving your system in an unbootable state or causing frequent crashes.
  • Time-Consuming Troubleshooting: You'll spend more time diagnosing and fixing update issues than you saved by reclaiming space.

For systems with very limited storage (e.g., 32GB or 64GB eMMC drives), the immediate gain of 7-10GB might seem critical. However, it also means these systems are inherently more vulnerable to the issues described above, as their total available space for updates is even smaller without the reserved buffer. In such cases, the "performance" gain is often offset by the instability and time lost troubleshooting. Always prioritize system stability, especially on a production machine.

Windows 10 vs. Windows 11: Any Differences?

The concept and implementation of Windows Reserved Storage are largely identical across Windows 10 (version 1903 and later) and Windows 11. Microsoft carried this feature over to its latest operating system due to its perceived benefits in update reliability and overall system health.

The methods to disable or enable Reserved Storage (Registry Editor and DISM commands) remain the same for both operating systems. You'll find the ShippedWithReserves DWORD in the same Registry path, and the DISM commands operate similarly.

Minor differences might appear in the user interface for checking Reserved Storage within the Settings app (e.g., "Advanced storage settings" vs. "Show more categories"), but the core functionality and the steps to manage it are consistent. Regardless of whether you're on Windows 10 or Windows 11, the advice regarding the risks and benefits of disabling Reserved Storage holds true.

Keeping your system optimized is crucial, irrespective of your Windows version. For further reading, an article on mastering Windows power modes can help extend battery life and manage performance effectively.

Expert Recommendations and Best Practices

As an SEO expert, my role is to provide you with comprehensive information and guidance. When it comes to Windows Reserved Storage, the overarching recommendation for most users is:

  • Leave It Enabled: If your PC has 128GB of storage or more, and you typically have at least 15-20GB of free space, the benefits of hassle-free updates and system stability far outweigh the small amount of reclaimed space. The risk of encountering update failures and system issues is simply not worth the minimal gain.
  • Consider Disabling Only If Absolutely Necessary: If you are running an older device with severely limited storage (e.g., 64GB or less SSD/eMMC) and are consistently running into "disk space full" issues that prevent essential operations, then disabling Reserved Storage might be a last resort.
  • Always Back Up First: If you choose to disable it, especially via the Registry Editor, always create a Registry backup. Better yet, create a full system restore point or even a disk image backup before making significant system changes.
  • Combine with Other Optimization Strategies: Even if you disable Reserved Storage, it’s crucial to actively manage your disk space using tools like Disk Cleanup, Storage Sense, and by regularly uninstalling unused applications and moving large files. Disabling Reserved Storage isn't a silver bullet; it's one piece of a larger storage management strategy.
  • Monitor Your System: After disabling, pay close attention to Windows Update notifications and ensure updates are installing correctly. If you start experiencing repeated update failures, it’s a strong indicator that you should re-enable Reserved Storage.

Ultimately, Microsoft implemented Reserved Storage to solve a real problem. Undoing that solution should only be done with a clear understanding of the trade-offs and risks involved. For the vast majority of users, the path of least resistance and greatest stability is to keep it enabled.

Conclusion

Windows Reserved Storage is a feature designed with good intentions: to enhance the reliability of system updates and maintain overall system stability. While it silently consumes a portion of your PC's storage, it does so to prevent frustrating "out of disk space" errors during critical update processes. For many users, particularly those with modern PCs boasting ample storage, the 7-10GB allocated to Reserved Storage is a small price to pay for a smoother, more secure computing experience.

However, for users with older, storage-constrained devices, reclaiming this hidden space can seem like a necessity. We've provided detailed steps on how to disable Windows Reserved Storage using both Registry Editor and DISM commands. But remember, the power to reclaim this space comes with the responsibility to understand the potential consequences, primarily the increased risk of update failures and system instability.

Our recommendation remains to approach this decision cautiously. Explore alternative disk cleanup methods first. If you choose to proceed, ensure you back up your system and monitor its behavior closely. By understanding the intricacies of Reserved Storage, you can make an informed choice that best balances your need for space with your desire for a stable and up-to-date Windows environment.

💡 Frequently Asked Questions

Q1: What exactly is Windows Reserved Storage?


A1: Windows Reserved Storage is a feature introduced in Windows 10 (version 1903) and present in Windows 11 that sets aside a portion of your PC's disk space (typically 7-10GB) for system updates, temporary files, drivers, and other critical system operations. Its purpose is to ensure enough space is always available for smooth and reliable updates, even if your main drive is nearly full.



Q2: Is it safe to disable Windows Reserved Storage?


A2: While technically possible, disabling Reserved Storage is generally not recommended for most users. Doing so can increase the risk of Windows Update failures, system instability, and issues with temporary file creation if your disk space runs critically low. It's only advisable for users with extremely limited storage who understand and are willing to manage these potential risks.



Q3: How much space can I reclaim by disabling Reserved Storage?


A3: The amount of space reclaimed typically ranges from 7GB to 10GB, though it can vary slightly depending on your system configuration and installed features. You can check the exact amount on your PC in Settings > System > Storage > System & reserved.



Q4: Will disabling Reserved Storage improve my PC's performance?


A4: Disabling Reserved Storage itself will likely have a negligible direct impact on your PC's day-to-day performance. The primary benefit is reclaiming disk space. Any perceived performance improvements would more likely come from having more free space overall, which can prevent slowdowns caused by a critically full drive, but not from the act of disabling the feature itself.



Q5: What are safer alternatives to free up disk space if I don't want to disable Reserved Storage?


A5: Several safer methods exist to free up disk space: use Windows' built-in Disk Cleanup tool, enable and configure Storage Sense (Settings > System > Storage), uninstall unnecessary applications, move large personal files to external storage or cloud services, and regularly delete temporary files via Settings.

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