SFF Storage Class Driver (sffdisk) Service Defaults in Windows 7

Small Form Factor Disk Driver by Microsoft Corporation.

Default Settings

Startup type: Manual
Display name:SFF Storage Class Driver
Service name:sffdisk
Service type:kernel
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sffdisk

Default Behavior

SFF Storage Class Driver is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If SFF Storage Class Driver fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the sffdisk service is not running because of the error.

Restore Default Startup Configuration of SFF Storage Class Driver

1. Run the Command Prompt as an administrator.

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

sc config sffdisk start= demand

3. Close the command window and restart the computer.

The sffdisk service is using the sffdisk.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 7 installation media.