Disk Driver Service Defaults in Windows 11
Default Settings
| Startup type: | Boot |
| Display name: | Disk Driver |
| Service name: | disk |
| Service type: | kernel |
| Error control: | normal |
| Path: | %SystemRoot%\System32\drivers\disk.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\disk |
Default Behavior
Disk Driver is a kernel driver. In Windows 11 it starts by the operating system Boot Loader before the Kernel initialization, as a part of the driver stack. If Disk Driver fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the disk service startup failure.
Restore Default Startup Configuration of Disk 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 disk start= boot
sc start disk
3. Close the command window and restart the computer.
The disk service is using the disk.sys file that is located in the C:\Windows\System32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 11 installation media.