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Luke Puplett
Asked: 2014-12-06 10:27:46 +0800 CST

How do I detach a disk from an Azure VM so I can re-attach it to another?

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I have an Azure VM with a data disk attached and mounted in a folder in c:\ - the VM is bricked after uninstalling .NET 4.5 (don't do that on 2012 R2).

I have created a new VM. Now how do I detach my data disk and reattach it to the new VM?

The detach disk option for the VM only lists its primary C: system disk.

windows

2 Answers

  1. Alexus pointed towards a link with the solution, though for StackOverflow, we should always pull out the salient points and post them here.

    • Delete the old VM, choose to keep the disks.
    • Restart the portal, this is important since the UI controls availability (show|hide) is computed once on load.
    • With the new VM highlighted, from the bottom menu, choose Attach > Existing Disk. When all disks are assigned to VMs, only Attach > "Empty Disk" is an option.
    • Choose the disk to attach.
    • RDP to the VM and mount the volume in Disk Manager.
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  2. Best Answer
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