"system and reserve" is using half of my storage! please help!

e 0 Reputation points
2026-10-06T10:41:36.75+00:00

Hi, I would like any help with sorting my storage.

I have done all the recommended cleanup tools, and I'm not super tech-savvy, but it doesn't make sense that "system and reserve" is using half of my storage! Any help would be appreciated, as I would like to stop having to delete apps I use. (It's a surface pro 7 if that's any help).

Thanks in advance,

E

Surface | Surface Pro | Performance and maintenance
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  1. AI answer

    2026-10-06T10:41:50.4533333+00:00

    System & reserved can be large, especially after Windows updates, because it can include update files, temporary system files, restore-related data, reserved storage, and files kept for uninstalling an update for about 10 days.

    A practical way to work through this on a Surface Pro 7 is:

    1. Open Settings > System > Storage.
    2. Select Show more categories to review what is included.
    3. Open Cleanup recommendations.
    4. Review these sections carefully:
      • Temporary files
      • Large or unused files
      • Files synced to the cloud
      • Unused apps
    5. Select items to remove, then select Clean up for each section.

    If Storage Sense is not already on:

    1. Go to Start > Settings > System > Storage.
    2. Turn on Storage Sense.
    3. Run Cleanup recommendations again.

    If the device was updated recently, one common reason for high system storage is the previous Windows version being kept temporarily. If it appears in Cleanup recommendations or Disk Cleanup as a previous Windows installation, it can be deleted to free space.

    Important: deleting a previous Windows version removes the ability to roll back to that earlier version, and this cannot be undone.

    If more cleanup is needed, use Disk Cleanup:

    1. Type disk cleanup in the taskbar search box and open it.
    2. Select the Windows drive and choose OK.
    3. Select file types to remove.
    4. Select Clean up system files for additional removable system files.
    5. Confirm with OK and Delete files.

    Important: if the previous Windows version appears there, deleting it also removes the rollback option.

    If Windows update is failing because of space, Windows may need extra storage temporarily to download the update, install optional features or languages already present, and keep removal files for about 10 days after the update.

    If the storage still looks unusually high after using Cleanup recommendations, Storage Sense, and Disk Cleanup, support for Surface is available through the Surface app, Get Help, or the Surface support site.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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  2. Alex-L 12,990 Reputation points Microsoft External Staff Moderator
    2026-10-07T10:24:14.7366667+00:00

    Hi e

    The AI answer covers the common cleanup steps. If "System & reserved" still seems unusually large afterward, could you share:

    • The total size shown for "System & reserved"
    • Your Windows version/build (Settings > System > About)
    • A screenshot of Settings > System > Storage

    On Windows, this category can include the page file, hibernation file, system restore data, update rollback files, and reserved storage, so the actual cause isn't always obvious without seeing the storage breakdown.

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