Unable to fix the issue with powershell script when using get-disk command

Question

Get-disk -Number 3 | select UniqueId

gives below error

Get-Disk : No MSFT_Disk objects found with property 'Number' equal to '3'. Verify the value of the property and retry.
At line:1 char:13

• $UNIQUEID = Get-Disk -Number 3 | Select UniqueId
• ~~~~~~~~~~~~~~~~~~
• CategoryInfo : ObjectNotFound: (3:UInt32) [Get-Disk], CimJobException
• FullyQualifiedErrorId : CmdletizationQuery_NotFound_Number,Get-Disk

Answer 1

Hello,

Are you sure that you have 4 disks attached on your computer ?
If it is not the case you should use wrap your command with a try catch in order to prevent the message for example :

try {
Get-disk -number 3 -ErrorAction Stop
}
catch {
Write-output "Less than 4 disk"
}

Answer 2

You can also code it this way (although the code submitted by @Clément BETACORNE will work quite well).

$d = Get-Disk |  
        ForEach-Object{  
            if ($_.Number -eq $WantedDiskNumber){  
                $_.UniqueId  
            }  
        }  
if ($d){  
    $d  
}  
else{  
    "Disk number $WantedDiskNumber wasn't found"  
}  

Answer 3

I can able to get the output for disk number 0 but I couldn't get it for number 3. and I have the disk installed.

can someone please help me to troubleshoot this issue?

Answer 4