Recently I came across this post. As a VMware admin, you often want to create an ISO as a quick method to copy files or installation files to a VM.
Ben Liebowitz shows how to create an ISO of large files with PowerShell. For the full post use the link below
http://thelowercasew.com/create-an-iso-file-with-powershell
All credit to Ben Liebowitz for this script
This is a copy of function to use incase the link above fails :
function itself:
#Get-Help About-Classesfunction New-IsoFile
{
<# .Synopsis Creates a new .iso file .Description The New-IsoFile cmdlet creates a new .iso file containing content from chosen folders .Example New-IsoFile “c:\tools”,”c:Downloads\utils” This command creates a .iso file in $env:temp folder (default location) that contains c:\tools and c:\downloads\utils folders. The folders themselves are included at the root of the .iso image. .Example New-IsoFile -FromClipboard -Verbose Before running this command, select and copy (Ctrl-C) files/folders in Explorer first. .Example dir c:\WinPE | New-IsoFile -Path c:\temp\WinPE.iso -BootFile “${env:ProgramFiles(x86)}\Windows Kits\10\Assessment and Deployment Kit\Deployment Tools\amd64\Oscdimg\efisys.bin” -Media DVDPLUSR -Title “WinPE” This command creates a bootable .iso file containing the content from c:\WinPE folder, but the folder itself isn’t included. Boot file etfsboot.com can be found in Windows ADK. Refer to IMAPI_MEDIA_PHYSICAL_TYPE enumeration for possible media types: http://msdn.microsoft.com/en-us/library/windows/desktop/aa366217(v=vs.85).aspx .Notes NAME: New-IsoFile AUTHOR: Chris Wu LASTEDIT: 03/23/2016 14:46:50 #>
[CmdletBinding(DefaultParameterSetName=’Source’)]Param(
[parameter(Position=1,Mandatory=$true,ValueFromPipeline=$true, ParameterSetName=’Source’)]$Source,
[parameter(Position=2)][string]$Path = “$env:temp\$((Get-Date).ToString(‘yyyyMMdd-HHmmss.ffff’)).iso”,
[ValidateScript({Test-Path -LiteralPath $_ -PathType Leaf})][string]$BootFile = $null,
[ValidateSet(‘CDR’,’CDRW’,’DVDRAM’,’DVDPLUSR’,’DVDPLUSRW’,’DVDPLUSR_DUALLAYER’,’DVDDASHR’,’DVDDASHRW’,’DVDDASHR_DUALLAYER’,’DISK’,’DVDPLUSRW_DUALLAYER’,’BDR’,’BDRE’)][string] $Media = ‘DVDPLUSRW_DUALLAYER’,
[string]$Title = (Get-Date).ToString(“yyyyMMdd-HHmmss.ffff”),
[switch]$Force,
[parameter(ParameterSetName=’Clipboard’)][switch]$FromClipboard
)
Begin {
($cp = new-object System.CodeDom.Compiler.CompilerParameters).CompilerOptions = ‘/unsafe’
if (!(‘ISOFile’ -as [type])) {
Add-Type -CompilerParameters $cp -TypeDefinition @’
public class ISOFile
{
public unsafe static void Create(string Path, object Stream, int BlockSize, int TotalBlocks)
{
int bytes = 0;
byte[] buf = new byte[BlockSize];
var ptr = (System.IntPtr)(&bytes);
var o = System.IO.File.OpenWrite(Path);
var i = Stream as System.Runtime.InteropServices.ComTypes.IStream;
if (o != null) {
while (TotalBlocks– > 0) {
i.Read(buf, BlockSize, ptr); o.Write(buf, 0, bytes);
}
o.Flush(); o.Close();
}
}
}
‘@
}
if ($BootFile) {
if(‘BDR’,’BDRE’ -contains $Media) { Write-Warning “Bootable image doesn’t seem to work with media type $Media” }
($Stream = New-Object -ComObject ADODB.Stream -Property @{Type=1}).Open() # adFileTypeBinary
$Stream.LoadFromFile((Get-Item -LiteralPath $BootFile).Fullname)
($Boot = New-Object -ComObject IMAPI2FS.BootOptions).AssignBootImage($Stream)
}
$MediaType = @(‘UNKNOWN’,’CDROM’,’CDR’,’CDRW’,’DVDROM’,’DVDRAM’,’DVDPLUSR’,’DVDPLUSRW’,’DVDPLUSR_DUALLAYER’,’DVDDASHR’,’DVDDASHRW’,’DVDDASHR_DUALLAYER’,’DISK’,’DVDPLUSRW_DUALLAYER’,’HDDVDROM’,’HDDVDR’,’HDDVDRAM’,’BDROM’,’BDR’,’BDRE’)
Write-Verbose -Message “Selected media type is $Media with value $($MediaType.IndexOf($Media))”
($Image = New-Object -com IMAPI2FS.MsftFileSystemImage -Property @{VolumeName=$Title}).ChooseImageDefaultsForMediaType($MediaType.IndexOf($Media))
if (!($Target = New-Item -Path $Path -ItemType File -Force:$Force -ErrorAction SilentlyContinue)) { Write-Error -Message “Cannot create file $Path. Use -Force parameter to overwrite if the target file already exists.”; break }
}
Process {
if($FromClipboard) {
if($PSVersionTable.PSVersion.Major -lt 5) { Write-Error -Message ‘The -FromClipboard parameter is only supported on PowerShell v5 or higher’; break }
$Source = Get-Clipboard -Format FileDropList
}
foreach($item in $Source) {
if($item -isnot [System.IO.FileInfo] -and $item -isnot [System.IO.DirectoryInfo]) {
$item = Get-Item -LiteralPath $item
}
if($item) {
Write-Verbose -Message “Adding item to the target image: $($item.FullName)”
try { $Image.Root.AddTree($item.FullName, $true) } catch { Write-Error -Message ($_.Exception.Message.Trim() + ‘ Try a different media type.’) }
}
}
}
End {
if ($Boot) { $Image.BootImageOptions=$Boot }
$Result = $Image.CreateResultImage()
[ISOFile]::Create($Target.FullName,$Result.ImageStream,$Result.BlockSize,$Result.TotalBlocks)
Write-Verbose -Message “Target image ($($Target.FullName)) has been created”
$Target
}
}
Ben goes on to share how he was able to create a variable for the source data, and use get-childitem to get that location and pipe that to creating the ISO. See below:
$source_dir = “Z:\Install\App123”
get-childitem “$source_dir” | New-ISOFile -path e:\iso\app123.iso
