LSI_SAS Service Defaults in Windows 7

LSI Fusion-MPT SAS Driver (StorPort) by LSI Corporation.

Default Settings

Startup type:Manual
Display name:LSI_SAS
Service name:LSI_SAS
Service type:kernel
Error control:normal
Group:SCSI Miniport
Path:%SystemRoot%\system32\DRIVERS\lsi_sas.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LSI_SAS

Default Behavior

LSI_SAS is a kernel device driver. In Windows 7 it won't be started if the user doesn't start it. If LSI_SAS 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 LSI_SAS service is not running because of the error.

Restore Default Startup Configuration for LSI_SAS

1. Run the Command Prompt as an administrator.

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

sc config LSI_SAS start= demand

3. Close the command window and restart the computer.

The LSI_SAS service is using the lsi_sas.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 7 installation media.