Windows couldn't be installed. We couldn't update the system reserved partition
Windows 10 couldn't be installed Windows Explorer lists all partitions of the PC. Check the system reserved partition on the affected PC to find out more about it. You may notice that it has a size of 100 Megabytes and that most of the space is not free. The system partition had 15 Megabytes of free space on the Windows 10 PC that threw the error message. Windows updates may fail if the system partition does not have enough free disk space. Windows administrators can correct the issue by freeing up disk space. I managed to free up 15 Megabytes of space by deleting all language files but the language file that I needed and running check disk to truncate the NTFS log. This resolved the Windows couldn't be installed. We couldn't update the system reserved partition. Microsoft's recommendation Microsoft recommends deleting data on the system partition to free up disk space to free up 15 Megabyte of space (when upgrading from Windows 8.1 or earlier), or 13 Megabytes of spa