Megasr Service Defaults in Windows 8

LSI MegaRAID Software RAID Driver by LSI Corporation, Inc.

Default Settings

Startup type: Manual
Display name:Megasr
Service name:megasr
Service type:kernel
Error control:normal
Group:SCSI Miniport
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\megasr

Default Behavior

The Megasr service is a kernel device driver. In Windows 8 it will not be started until the user starts it. If Megasr fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the megasr service hasn't been started.

Restore Default Startup Configuration of Megasr

1. Run the Command Prompt as an administrator.

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

sc config megasr start= demand

3. Close the command window and restart the computer.

The megasr service is using the megasr.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 8 installation media.