What is jraid?

The genuine jraid.sys file is a software component of JMicron JMB36X RAID Driver by JMicron Technology Corporation.
The "jraid.sys" driver used only in 64-bit Windows computers resides in "C:\Windows\System32\drivers" and can be started or stopped from the Control Panel "Services" applet. Stopping it is not recommended as it controls the JMB36X storage controller designed by JMicron Technology Corporation of Taiwan. JMicron, which has a large R&D facility in Irvine, CA, USA, designs storage device bridge and controller chips with RAID (Redundant Array of Independent Disks) capability. The version of "jraid.sys" must suit both the hardware and the OS, as the 2009 version in Windows 7 Pro 64-bit computers often causes driver power state failures upon upgrading to 64-bit Windows 10 Pro.

JRAID stands for JMicron RAID Driver

Jraid.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 jraid.sys is a Windows system file or if it belongs to an application that you can trust.

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Jraid.sys file information

The process known as JMicron JMB36X RAID Driver or JRAID belongs to software JMicron JMB36X RAID Driver or JMicron (version JR036X RAID Driver) by JMicron Technology (

Description: Jraid.sys is not essential for the Windows OS and causes relatively few problems. The file jraid.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 104,024 bytes (25% of all occurrences), 93,096 bytes, 65,024 bytes or 38,016 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. There is no detailed description of this service. The file is not a Windows system file. Jraid.sys is a Microsoft signed file. jraid.sys appears to be a compressed file. Therefore the technical security rating is 13% dangerous; however you should also read the user reviews.

Recommended: Identify jraid.sys related errors

Important: Some malware disguises itself as jraid.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the jraid.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.


User Comments

Jraid.sys is part of JMicron JMB36X RAID Driver developed by JMicron Technology
since i started with clean install, have very few programs installed, have no viruses spyware - malware, I renamed the file - (jraidXX).sys - and will see if I still get the Blue Screen of Death :(
  Christopher Way  
Jraid.sys + winXP32bit + SSD disc = BSOD

Rating chart

Summary: Average user rating of jraid.sys: based on 6 votes with 3 user comments. 2 users think jraid.sys is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks it's neither essential nor dangerous. One user suspects danger.

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Best practices for resolving jraid issues

A clean and tidy computer is the key requirement for avoiding problems with jraid. 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 jraid.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

jraid.sys [all]