
Since most users do not know which is the actual cause for this error, it is very necessary to view and check properties of the system reserved partition at first. How to Quickly Fix "Windows 10 Upgrade Couldn't Update System Reserved Partition" Error Fortunately, MiniTool Partition Wizard Free Edition will bring users great surprise.

Nevertheless, Windows does not provide users with easy-to-use and effective solutions to do these operations, so users had better employ a free third party partitioning program. Now that causes have been found, it should be easy to fix the issue: if the error is caused by low disk space, increase system reserved partition size if the error occurs due to file system error, fix file system of Windows 7/8.1 system reserved partition instead. Microsoft says some third-party anti-virus and security apps write to the system reserved partition, which could fill the partition up.Ĭause 2: File system of system reserved partition runs in error. Well, do you want to know the exact cause(s) for this error or do you know how to clear the very roadblock for successful upgrade? If you haven't got any good idea, please read this post, and we will tell you reason(s), along with 2 solutions which have been proved to work flawlessly.Ģ Causes for "Windows 10 Upgrade Couldn't Update System Reserved Partition" ErrorĪfter a series of tests and researches we found 2 causes for this error, including:Ĭause 1: system reserved partition is full. When upgrading to Windows 10 from Windows 7 or Windows 8.1, you may receive the so annoying error message " We couldn't update the system reserved partition" and have to stop the upgrade with great unwillingness.

