MDB - added extra gallery requirement

Author: RoseHJM

articles/dev-box/how-to-configure-azure-compute-gallery.md

@@ -14,7 +14,7 @@ ms.topic: how-to
 
 In this article, you learn how to configure and attach an Azure compute gallery to a dev center in Microsoft Dev Box. With Azure Compute Gallery, you can give developers customized images for their dev box.
 
-Azure Compute Gallery is a service for managing and sharing images. A gallery is a repository that's stored in your Azure subscription and helps you build structure and organization around your image resources. Dev Box supports GitHub, Azure Repos, and Bitbucket repositories to provide an image gallery.
+Azure Compute Gallery is a service for managing and sharing images. A gallery is a repository stored in your Azure subscription that helps you build structure and organization around your image resources. Dev Box supports GitHub, Azure Repos, and Bitbucket repositories to provide an image gallery.
 
 After you attach a compute gallery to a dev center in Microsoft Dev Box, you can create dev box definitions based on images stored in the compute gallery.
 
@@ -41,7 +41,7 @@ To learn more about Azure Compute Gallery and how to create galleries, see:
 
 A gallery used to configure dev box definitions must have at least [one image definition and one image version](/azure/virtual-machines/image-version).
 
-When you create a virtual machine (VM) image, select an image from the Azure Marketplace that's compatible with Microsoft Dev Box. The following are examples of compatible images:
+When you create a virtual machine (VM) image, select an image from Azure Marketplace that's compatible with Microsoft Dev Box. The following are examples of compatible images:
 - [Visual Studio 2019](https://azuremarketplace.microsoft.com/marketplace/apps/microsoftvisualstudio.visualstudio2019plustools?tab=Overview)
 - [Visual Studio 2022](https://azuremarketplace.microsoft.com/marketplace/apps/microsoftvisualstudio.visualstudioplustools?tab=Overview) 
 
@@ -60,6 +60,7 @@ The image version must meet the following requirements:
     - For information about how to remove a recovery partition, see the [Windows Server command: delete partition](/windows-server/administration/windows-commands/delete-partition).
 - Default 64-GB OS disk size
     - The OS disk size is automatically adjusted to the size specified in the SKU description of the Windows 365 license.
+- Data disks cannot be attached to the VM prior to capturing the image.
 - The image definition must have [trusted launch enabled as the security type](/azure/virtual-machines/trusted-launch). You configure the security type when you create the image definition.
 
    :::image type="content" source="media/how-to-configure-azure-compute-gallery/image-definition.png" alt-text="Screenshot that shows Windows 365 image requirement settings.":::