What is rdyboost?

The genuine rdyboost.sys file is a software component of Microsoft Windows Operating System by Microsoft.
A startup driver for the Ready Boost package, this system file allows your computer to utilize available flash media to assist your system RAM in offloading some of the workload. When available RAM is low, Windows will automatically use hard drive space to shoulder some of the burden, which can be extremely slow and inefficient. Ready Boost allows your PC to use flash media, which is considerably faster than using a hard disk. Founded in 1975 in New Mexico, Microsoft is now one of the largest software corporations in the world. Currently headquartered in Washington, the flagship Windows operation system is the most utilized OS in the world.

RdyBoost stands for ReadyBoost Driver

Rdyboost.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if rdyboost.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for rdyboost drivers in need of updating

Rdyboost.sys file information

The process known as ReadyBoost Driver belongs to software Microsoft Windows Operating System by Microsoft (

Description: The original rdyboost.sys is an important part of Windows and rarely causes problems. Rdyboost.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 173,440 bytes (90% of all occurrences) or 173,648 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. It is a Windows core system file. It is a trustworthy file from Microsoft. The program is not visible. The file has a digital signature. rdyboost.sys appears to be a compressed file. Therefore the technical security rating is 0% dangerous.

Uninstalling this variant: If you have any problems with rdyboost.sys, you could do the following:
  1) uninstall the software Microsoft Windows using the Uninstall a Program function of Windows Control Panel (Windows: Start, Settings, Control Panel, Uninstall a Program)
  2) ask the developer,, for support.

Recommended: Identify rdyboost.sys related errors

Important: Some malware disguises itself as rdyboost.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the rdyboost.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


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Best practices for resolving rdyboost issues

A clean and tidy computer is the key requirement for avoiding problems with rdyboost. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the rdyboost.sys process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

rdyboost.sys [all]