Powershell – Using Powershell, how to eject an ISO image from a Hyper-V virtual machine

Until I find a WMI (e.g. based on something like Win32_ServerConnection) or .NET object solution that lets me deal with the list of connections as first class objects rather than parsing the text output, I've come up with this solution based around the OpenFiles utility. I'm fairly concerned that it's fragile and not that obvious to modify for different needs but it seems to be working for my narrow scenario at the moment. I've kept the regex with named captures for the other parts of the output as a reference for if you need to use different parameters for openfiles /disconnect (/A /ID /OP).

Note that repeated use of Select-String is something I don't fully understand but is to do with the fact that this is necessary to get access to the named captures. See this RegEx Named Groups with Select-String posting for details. Happy to change it if someone can tell me how!

$computerName = 'ServerName'
$pattern = '^.+ (?<FileId>\d+) (?<User>[^ ]+).+ (?<OpenFile>C:.+\\SpecificFolder\\.*)$'
$openfiles = openfiles /query /s $computerName /v | Select-String -Pattern $pattern | ForEach-Object {[void]($_.Line -match $pattern); $matches['OpenFile']}
$openfiles | Sort-Object -Unique | ForEach-Object { openfiles /disconnect /s $computerName /a * /op `"$_`"}

The problem was copy of that file in general. I tried copying the file in Explorer and it failed after about an hour with an error stating that part of the file was locked by another process.

I ended up amending the script to zip the file before moving it to the destination. The script now runs successfully albeit taking much longer.

Cheers for any answers tho.