How to Remove Warning CBT-Enabled VM Having Multi-Writer Disk(s) is Not Supported

Aug 30, 2021


Welcome to ClubMaxSEO, your go-to destination for expert SEO services in the Business and Consumer Services industry. In this article, we will guide you through the process of removing the warning message for CBT-enabled VMs with multi-writer disks on VMware vSphere. This comprehensive and detailed guide will help you tackle this issue effectively.

Understanding the Warning Message

When managing virtual machines on VMware vSphere, you may come across a warning message stating that "CBT-enabled VM having multi-writer disk(s) is not supported." This warning indicates that the Change Block Tracking (CBT) feature, along with multi-writer disks, is not compatible and can lead to potential issues. It is important to address this warning to ensure the stability and proper functioning of your virtual environment.

Step-by-Step Guide to Remove the Warning

Step 1: Check Virtual Machine Configuration

Start by verifying the configuration of your CBT-enabled VM. Ensure that there are no multi-writer disks attached. Access VMware vSphere Client and navigate to the virtual machine's settings. Remove any multi-writer disks and save the configuration.

Step 2: Disable Change Block Tracking

Next, we need to disable Change Block Tracking to prevent any conflicts. Power off the virtual machine and right-click on it. Select "Edit Settings" and navigate to the "Options" tab. Go to "General" and click on "Configuration Parameters." Look for the "ctkEnabled" parameter and set its value to false. Save the changes and power on the virtual machine again.

Step 3: Restart VMware Tools

In some cases, restarting VMware Tools can resolve the warning message. Within the virtual machine, select "Guest" from the menu and click on "Install/Upgrade VMware Tools." Follow the prompts to install or upgrade VMware Tools. Finally, restart the virtual machine to apply the changes.

Step 4: Validate the Configuration

After following the previous steps, it is essential to validate the configuration. Power off the virtual machine and check its settings once again. Ensure that the multi-writer disks are removed, and the CBT feature is disabled. Power on the virtual machine and monitor for any warning messages or issues. If the warning message no longer appears, you have successfully resolved the problem.


In conclusion, removing the warning message for CBT-enabled VMs with multi-writer disks on VMware vSphere is crucial for maintaining a stable virtual environment. By following the steps outlined in this guide, provided by ClubMaxSEO, you can eliminate the warning and ensure smooth operation of your virtual machines. For expert SEO services in the Business and Consumer Services industry, trust ClubMaxSEO to deliver outstanding results for your website.

Seva Feldman
This article rocks!
Nov 8, 2023
David Bourke
This is exactly what I needed. Thank you!
Apr 18, 2023
Jaime Jower
Great article! I managed to fix my VM thanks to your guide.
Jan 3, 2023
Kk Lee
Your explanation was on point. Keep up the good work!
Nov 8, 2022
Sean Burnie
Incredibly useful information. Thank you for sharing your knowledge.
Nov 1, 2022
Windmill IT web design, optimisation, SEO
Clear, concise, and informative. Exactly what I was looking for.
Sep 24, 2022
Chris Katterjohn
I've been struggling with this issue for a while. Your guide cleared things up for me. 👍
Aug 29, 2022
Dave Bowlin
This article saved me a lot of time and frustration. Thank you!
Jul 4, 2022
Thanks for the detailed explanation! Very helpful.
Jul 4, 2022
Melissa Gardonio
Your instructions were easy to follow. Thank you!
Jun 14, 2022
Ryan Andrews
Your knowledge of VMware vSphere is impressive. Thanks for the help.
May 28, 2022
David Benjamin
Your article was the solution to my VM problem. Kudos to you!
Mar 2, 2022
Angela Bui
Appreciate the step-by-step walkthrough. Made it much easier to understand.
Feb 22, 2022
Cary Flanagan
Your expertise is truly making a difference. Thanks for sharing.
Dec 25, 2021
Emily Eddings
Great article! Clear and concise instructions.
Dec 1, 2021
Keisser Rocha
I've bookmarked this for future reference. Thank you!
Oct 22, 2021
Chris Bauleke
Excellent job on breaking down a complex topic into manageable steps.
Oct 17, 2021
Jim Wynes
Your expertise shines through in this article. Thank you for the insights.
Oct 5, 2021
Lucille Bousquet
I finally understand how to tackle this issue. Thank you for the guidance.
Sep 18, 2021