HI- You try using below steps, attaching PDF file for screenshots -
CloudPC.pdf1. Using the Microsoft Intune admin centre
- Sign in to the Microsoft Intune admin centre.
- Select Devices > Windows 365 (under Provisioning) > Device images.
- Select the device image that you want to attach the new disk to.
- Under Storage, select Add new disk.
- In the Add new disk pane, provide the following information:
- Disk name: The name of the new disk.
- Disk size: The size of the new disk in GB.
- Disk type: The type of disk to create. Choose either SSD or HDD. [Screenshot of Microsoft Intune admin center Add new disk pane]
- Select Add. [Screenshot of Microsoft Intune admin center Add new disk pane with the Add button selected]