Disk I/O Rate Filter Driver (iorate) Service Defaults in Windows 10

Provides rate control for disk I/O traffic.

Default Settings

Startup type:Boot
Display name:Disk I/O Rate Filter Driver
Service name:iorate
Service type:kernel
Error control:critical
Group:PnP Filter
Path:%SystemRoot%\system32\drivers\iorate.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iorate

Default Behavior

Disk I/O Rate Filter Driver is a kernel device driver. In Windows 10 it is starting by the operating system Boot Loader as a part of the driver stack for the boot volume. If Disk I/O Rate Filter Driver fails to load or initialize, Windows 10 attempts to record the error details into Event Log and restart the PC, using the Last Known Good configuration. If the Last Known Good configuration cannot be applied or working improperly, Windows 10 startup process halts with a Stop error. If you disable or delete the iorate service, Windows 10 won't start.

Restore Default Startup Configuration for Disk I/O Rate Filter Driver

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config iorate start= boot
sc start iorate

3. Close the command window and restart the computer.

The iorate service is using the iorate.sys file that is located in the %WinDir%\system32\drivers folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 10 installation media.