This is best done by advanced users with experience using the command line. ResolutionĬaution: these steps are complicated, and carry some risk. Some third-party anti-virus and security apps write to the SRP, and can fill it up. The System Reserve Partition (SRP) is a small partition on your hard drive that stores boot information for Windows. The System Reserved Partition (SRP) may be full. When upgrading to, or updating, Windows 10, you might encounter the error “We couldn’t update system reserved partition”, error code 0xc1900104, or error code 0x800f0922.
