ReadyBoost (rdyboost) Service Defaults in Windows 7


Default Settings

Startup type: Boot
Display name:ReadyBoost
Service name:rdyboost
Service type:kernel
Error control:critical
Group:PnP Filter
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\rdyboost

Default Behavior

ReadyBoost is a kernel device driver. In Windows 7 it is being loaded by Boot Loader before Kernel initialization. If ReadyBoost fails to load, Windows 7 attempts to write the error data into Event Log and restart the computer, using the Last Known Good configuration. If the Last Known Good configuration is not valid, Windows 7 startup ends with a Stop error. If you remove or disable the rdyboost service, Windows 7 won't start.

Restore Default Startup Configuration of ReadyBoost

1. Run the Command Prompt as an administrator.

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

sc config rdyboost start= boot
sc start rdyboost

3. Close the command window and restart the computer.

The rdyboost service is using the rdyboost.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.