Increase The Size Of Your Azure VM OS Disk Via PowerShell

[GregoryHall]

Authenticate to Azure Account

Add-AzureAccount

Select Azure Subscription

$subscription = (Get-AzureSubscription).SubscriptionName | Out-GridView -Title "Select Azure Subscription" -PassThru
Select-AzureSubscription -SubscriptionName $subscription -Current

Select Azure Storage Account

$storageAccount = Get-AzureStorageAccount | Select Label,Location | Out-GridView -Title "Select Azure Storage Account" -PassThru
Set-AzureSubscription -SubscriptionName $subscription -CurrentStorageAccountName $storageAccount

Select Azure VM

$vm = Get-AzureVM | Select ServiceName | Out-GridView -Title "Select a VM Service Name ..." -PassThru
$vmname = $vm.ServiceName

Select Data Disk to resize

$disk = Get-AzureVM -ServiceName $vmname -Name $vmname | Get-AzureOSDisk | Out-GridView -Title "Select a data disk to resize" -PassThru
$diskName = $disk.DiskName

Stop and Deallocate VM prior to resizing data disk

Stop-AzureVM -ServiceName $vmname -Name $vmname -Force

Specify new Data Disk size – must be larger than current size

do {$size = Read-Host -Prompt "New size in GB"} until ( $size -gt $disk.LogicalDiskSizeInGB )

Resize Data Disk to Larger Size

Update-AzureDisk -Label "$diskName" -DiskName "$diskName" -ResizedSizeInGB $size

Start VM

Start-AzureVM -ServiceName $vmname -Name $vmname