“We Couldn’t Update System Reserved Partition” Error Installing Windows 10

“We Couldn’t Update System Reserved Partition” Error Installing Windows 10

The Problem:

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.

What’s Causing We Couldn’t Update System Reserved Partition Error:

The System Reserved Partition (SRP) may be full.

If the System Reserved Partition (SRP) is full, it may be due to the presence of boot information for Windows. Some third-party security apps write to the SRP, which can cause it to fill up over time.

How To Fix “We Couldn’t Update System Reserved Partition” Error:

Proceed with caution – the following steps are complex and come with certain risks. It is advised that only users with previous experience using the command line attempt this. If you make a mistake entering any of the commands, you could render your device unusable and potentially lose any data stored on it.
You will need to free up 15MB of space on the SRP in order to upgrade your device. Please use the appropriate method below and then try the upgrade again. If you are updating to Windows 10, you will need to free up 13MB.
First, figure out whether the SRP is GPT or MBR partition style:
  1. To access your computer’s Disk Management tool, press the Windows key + R to open the Run window. Type in “diskmgmt.msc” and press Enter.
  2. To access the SRP on a disk, press and hold or right-click on the disk (such as Disk 0) and select Properties from the pop-up menu.

    how to fix we could not update system reserved partition
    3. Choose the Volumes tab
    4. The “Partition Style” line will show either “GUID Partition Table (GPT)” or “Master Boot Record (MBR).”