Go to the file location of Steam (default location is C:/program files/Steam). Steam Disk Write Error Fix Provided by Users 1. How to fix disk write error Steam? If you are having troubles updating a game or installing a game on Steam due to a disk write error now, try the following solutions out. Disk write error shown in the parenthesis is the specific reason responsible for the error. While installing or updating a game like Dota 2, Fallout 4, Grand Theft Auto V and PlayerUnknown's Battlegrounds, Steam sometimes displays an error message which reads, ' An error occurred while installing/updating (disk write error)'.Ĭommonly known as Steam disk write error, this issue can occur anytime when a game is updated or installed on Steam, leading to Steam being unable to complete the installation. Steam Disk Write Error While Downloading/Installing Steam Disk Write Error Fix Provided by Users.Steam Disk Write Error While Downloading/Installing.