What is ElRawDsk?

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

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

ElRawDsk.sys file information

The process known as RawDisk Driver. Allows write access to raw disk sectors for user mode applications in Windows (version 2000,...) or RawDisk Driver. Allows write access to files and raw disk sectors for user mode applications in Win or ElRawDisk belongs to software ElRawDisk or RawDisk or iolo Technologies by EldoS (

Description: ElRawDsk.sys is not essential for the Windows OS and causes relatively few problems. ElRawDsk.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 20,392 bytes (42% of all occurrences), 12,800 bytes and 4 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. The service has no detailed description. The file is not a Windows system file. It is digitally signed. ElRawDsk.sys appears to be a compressed file. Therefore the technical security rating is 36% dangerous, however you should also read the user reviews.

Uninstalling this variant: You have the option to ask Customer Support to assist you or uninstall EldoS Corporation or iolo Technologies, LLC from your computer using the Control Panel applet Uninstall a Program.

Recommended: Identify ElRawDsk.sys related errors

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

This raw disk driver for XP/Vista prevents CHKDSK from running at OS boot
ElRawDsk.sys is a Windows driver.

Summary: Average user rating of ElRawDsk.sys: based on 2 votes with 2 user comments. One user thinks ElRawDsk.sys is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous.

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Best practices for resolving ElRawDsk issues

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

ElRawDsk.sys [all]