Disk Resizing on Azure Issue

Martin Hughes 1 Reputation point


We have a Microsoft Azure VM and I have re-sized a data disk via the Azure portal.

I can see the re-size has been completed however when I go onto the VM via RDP, the space shows as unallocated and won't allow me to increase the size of this drive. When I try to increase via disk management, the option is greyed out.

Can someone please advise on where I have gone wrong, and how to increase this?

Thanks in advance.

Azure Virtual Machines
Azure Virtual Machines
An Azure service that is used to provision Windows and Linux virtual machines.
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Azure Disk Storage
Azure Disk Storage
A high-performance, durable block storage designed to be used with Azure Virtual Machines and Azure VMware Solution.
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  1. Jackson Martins 9,796 Reputation points MVP

    Hi @Martin Hughes

    You need to extend on operation system too, if you are using windows you need to go to disk manager and expand

    Or run: diskmgmt.msc


    You will see unallocated space, for more infos:

    If you are trying to expand the OS disk, and it is more than 2TB, you will need to convert the partition to GPT

    Get in touch if you need more help with this issue.

    --please don't forget to "[Accept the answer]" if the reply is helpful--

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