Forum Discussion
Windows 11 won't let me update my system when it tells me I have an update
Well, someone can fix me or tell me how to fix the problem I have is that I get that I have an update, but when I put it to update when it reaches 8% I get the error of could not update the reserved partition of the system, then I ask you is there a solution?
3 Replies
This error means your System Reserved / EFI partition is too small, so Windows can’t apply the update. It’s a common issue.
What you can do:
Option 1 (simplest)
Run the update using the Windows 11 Installation Assistant.
It often bypasses the reserved partition size check.
Option 2 (proper fix)
You need to extend the System Reserved / EFI partition to at least 500 MB.
This requires shrinking the main C: partition and extending the reserved one using a partition tool.
After that
Reboot and run Windows Update again — it should complete normally.
Summary:
The update fails because the reserved system partition is too small. Expanding it or using the Installation Assistant fixes the problem.
Run diskpart , use list vol and sel vol X to locate and select the system reserved partition, then execute extend size=500 to expand its capacity.
