This article shows you how to attach both new and existing disks to a Linux virtual machine through the Azure portal. Add a data disk 1. Sign in to the Azure portal . 2. Search for and select Virtual machines . 3. Select a virtual machine from the list. 4. On the Virtual machine pane, select Disks . 5. On the Disks pane, select Create and attach a new disk . 6. In the drop-downs for the new disk, make the selections you want, and name the disk. 7. Select Save to create and attach the new data disk to the VM. Attach an existing disk 1. On the Disks pane, under Data disks, select Attach existing disks. 2. Click the drop-down menu for Disk name and select a disk from the lis...