Generate a report of entire D: Drive using PowerShell - powershell

Question

I am new to PowerShell scripting. For one of my School project I need to generate a report of the entire D Drive. I need to list all the folders sorted according to the size
Summary of the work I have done so far:
I have installed a PowerShell module from this website
https://www.gngrninja.com/script-ninja/2016/5/24/powershell-calculating-folder-sizes
using Install-Module PSFolderSize
After installing if I run the command Get-FolderSize I'm getting the FolderSize for the path I'm running from. The foldersize is not running for all the folders in the directory.
I am facing difficulty traversing through all the folders.
Expected Output:
+-------------+--------------+--------------+-----------+-----------------------+-----------+
| FolderName | Size(Bytes) | Size(MB) | Size(GB) | FullPath | HostName |
+-------------+--------------+--------------+-----------+-----------------------+-----------+
| Disney | 454545448889 | 433488.32024 | 423.32844 | D:\Videos\Disney | localhost |
| Universal | 25454544884 | 24275.34569 | 23.70639 | D:\Videos\Universal | localhost |
| Fox Studios | 8803063287 | 8395.25536 | 8.19849 | D:\Videos\Fox Studios | localhost |
+-------------+--------------+--------------+-----------+-----------------------+-----------+
Can anyone help me where to start?

Answer 1

I would use other tools (like TreeSize) for creating reports like this because of the speed and long filename problematics.
However you could solve your task with the following powershell command without downloading an other Module.
For each subfolder inside your D:\ you have to receive your required data.
You have to calculate the size of each directory by looking for each file Get-ChildItem -Path $Folder.FullName -Recurse -Force and sum up the lenght of all files.
Here you can use the Measure-Object -Property Length -Sum. Depending on the directory size this task will take some time.
Take a look here if you struggle with long file name issues.
After collection and adding all data to an output variable use Select-Object -Property 'FolderName', 'Size(Bytes)', 'Size(MB)', 'Size(GB)', 'FullPath', 'HostName' for sorting the header order.
The command Sort-Object -Property 'Size(Bytes)', 'FolderName' will sort the output depending on the folder size and name.
For a nice looking output use Format-Table.
[System.String]$Path = 'D:\'
[PSCustomObject[]]$Output = #()
foreach ($Folder in (Get-ChildItem -Path $Path -Directory))
{
[System.Int64]$Size = (Get-ChildItem -Path $Folder.FullName -Recurse -Force | Measure-Object -Property Length -Sum).Sum
[System.Collections.Hashtable]$Hashtable = #{
'FolderName' = $Folder.Name
'Size(Bytes)' = $Size
'Size(MB)' = $Size / 1MB
'Size(GB)' = $Size / 1GB
'FullPath' = $Folder.FullName
'HostName' = $env:COMPUTERNAME
}
$Output += New-Object -TypeName 'PSCustomObject' -Property $Hashtable
}
$Output | `
Select-Object -Property 'FolderName', 'Size(Bytes)', 'Size(MB)', 'Size(GB)', 'FullPath', 'HostName' | `
Sort-Object -Property 'Size(Bytes)', 'FolderName' | `
Format-Table

Answer 2

[System.String]$Path = 'D:\'
[PSCustomObject[]]$Output = #()
foreach ($Folder in (Get-ChildItem -Recurse $Path | Where-Object { $_.PSIsContainer }))
{
[System.Int64]$Size = (Get-ChildItem -Path $Folder.FullName -Recurse -Force | Measure-Object -Property Length -Sum -ErrorAction SilentlyContinue).Sum
[System.Collections.Hashtable]$Hashtable = #{
'FolderName' = $Folder.Name
'Size(Bytes)' = $Size
'Size(MB)' = [Math]::Round($Size / 1MB ,2)
'Size(GB)' = [Math]::Round($Size / 1GB,2)
'FullPath' = $Folder.FullName
'HostName' = $env:COMPUTERNAME
}
$Output += New-Object -TypeName 'PSCustomObject' -Property $Hashtable
}
$Output | `
Select-Object -Property 'FolderName', 'Size(Bytes)', 'Size(MB)', 'Size(GB)', 'FullPath', 'HostName' | `
Sort-Object -Property 'Size(Bytes)' , 'FolderName' -Descending | `
Format-Table