What is TosIde?

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

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TosIde.sys file information

The process known as TosIde or Toshiba PCI IDE Controller belongs to software TosIde or Microsoft Windows Operating System by Microsoft (

Description: TosIde.sys is an important part of Windows, but often causes problems. TosIde.sys is located in the C:\Windows\System32\drivers folder. The file size on Windows 10/8/7/XP is 4,992 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. The program has no visible window. The file is a Microsoft signed file. There is no detailed description of this service. TosIde.sys appears to be a compressed file. Therefore the technical security rating is 0% dangerous, however you should also read the user reviews.

Recommended: Identify TosIde.sys related errors

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

Microsoft Corporation Toshiba PCI IDE Controller
  BullZhot   (further information)
AVG caught it as a virus: win32 patched DY
  The Toecutter  
Runscanner, a "freeware startup analyzer" says this file doesn't exist in my HDD. I'm using a sata one. Maybe this is the reason.

Summary: Average user rating of TosIde.sys: based on 3 votes with 3 user comments. One user thinks TosIde.sys is essential for Windows or an installed application. One user thinks it's neither essential nor dangerous. One user thinks TosIde.sys is dangerous and recommends removing it.

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Best practices for resolving TosIde issues

A clean and tidy computer is the key requirement for avoiding problems with TosIde. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the TosIde.sys process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

TosIde.sys [all]