What is dmboot?

The genuine dmboot.sys file is a software component of VERITAS NT Disk Manager by Microsoft | Veritas Software.
This startup driver is for Veritas and Microsoft Logical Disk Manager. It allows a logical disk to mount and be modified. A logical disk is unlike a conventionally partitions drive. It allows data to be reallocated back and forth from existing sections without disrupting the partition scheme for drive integrity. First developed for Windows 2000, all subsequent versions of Windows support the Logical Disk Manager. Veritas merged with Symantec in 2005.

DMBoot stands for Disk Manager Boot

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

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

Dmboot.sys file information

The process known as NT Disk Manager Startup Driver or Treiber für NT Datenträgerverwaltung or Startdriver til NT Disk Manager belongs to software VERITAS NT Disk Manager or dmboot by Microsoft Corp., Veritas Software (

Description: The original dmboot.sys is an important part of Windows and rarely causes problems. The file dmboot.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 799,744 bytes (66% of all occurrences), 800,384 bytes or 800,000 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. Dmboot.sys is a Windows core system file. The program is not visible. The service has no detailed description. Dmboot.sys is a Microsoft signed file. The program is not active. dmboot.sys appears to be a compressed file. Therefore the technical security rating is 2% dangerous, however you should also read the user reviews.

Recommended: Identify dmboot.sys related errors

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

dmboot sys is required for multiple os
dmboot.sys is NT Disk Manager Startup Driver, part of Windows

Summary: Average user rating of dmboot.sys: based on 4 votes with 2 user comments. 4 users think dmboot.sys is essential for Windows or an installed application.

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Best practices for resolving dmboot issues

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

dmboot.sys [all]