Full output hidden on console - powershell

Question

I don't get full output of the following code I made.
For Example:
DriveSpace : {174, 0, 98, 171...}
Notice the ellipses (...) after 171. It is skipping the rest of the output after that. You can run the following script to see my output.
#Start of script
$cpu = gwmi -Class Win32_Processor | Select-Object NumberOfCores,NumberOfLogicalProcessors
$memory = gwmi -class win32_physicalmemory | Select-Object {[math]::truncate($_.capacity / 1GB)}
$HostDescription= gwmi -Class Win32_OperatingSystem
$fqdn = "$env:computername.$env:userdnsdomain"
$OS = (gwmi Win32_OperatingSystem)
$OSarchitecture = (gwmi Win32_OperatingSystem)
$disk = gwmi Win32_LogicalDisk | Select-Object DeviceID, volumeName, {[math]::truncate($_.size / 1GB)}
$timezone = [System.TimeZone]::CurrentTimeZone
$fire = netsh advfirewall show publicprofile | select-string state
$firematch = $fire -match "off"
$slmgrResult = cscript c:\windows\system32\slmgr.vbs /dli | Select-string "License Status"
$activation = $slmgrResult -match "Licensed"
$apps = gp HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* |Select DisplayName, DisplayVersion, Publisher, InstallDate
$network = Get-WmiObject win32_networkadapterconfiguration -filter "ipenabled = 'True'" | select-object IPAddress, DefaultIPGateway, DNSDomain, IPSubnet
$props = #{
NumberOfCores = $cpu.NumberOfCores
NumberOfLogicalProcessors = $cpu.NumberOfLogicalProcessors
Memory = $memory.{[math]::truncate($_.capacity / 1GB)}
HostDescription = $HostDescription.Description
FQDN = "$env:computername.$env:userdnsdomain"
OS = (gwmi Win32_OperatingSystem).Name
OSarchitecture = $OSarchitecture.OSArchitecture
DriveLetters = $disk.DeviceID
DriveLabels = $disk.volumeName
DriveSpace = $disk.{[math]::truncate($_.size / 1GB)}
timezone = [System.TimeZone]::CurrentTimeZone.StandardName
FirewallDisabled = $firematch
Licensed = $activation
Applications = $apps
IPAddress_Gateway_DNSDomain_subnet = $network.IPAddress, $network.DefaultIPGateway, $network.DNSDomain, $network.IPSubnet
}
New-Object PSObject -Property $props
#End of script

Answer 1

This is not an official answer as I think the OP needs to be clear on what output he is expecting. This is a start nonetheless
While I have not found official documentation to support this you are just seeing how PowerShell handles console output. Consider the following example which is a collection of varying sizes of arrays.
[pscustomobject]#{
data = "1","2","3","4","5"
}
Would produce the following list style output.
data : {1, 2, 3, 4...}
Notice the fifth element of the 5 property now has the ellipses. The data is still there. It has just been truncated on the console to make the output more terse and easier to read. In this case it seems folly to do so but with some objects complicated output PowerShell has to draw the line somewhere.
Prevent the ellipses
As PetSerAL pointed out you can just use the following line of code before your output.
$FormatEnumerationLimit=-1
If you look at about_Preference_Variables you will see that, by default, this is set to 4. That would support the output you are seeing. Set that value to something higher or -1 and see if it helps.
Other Potential Issues
Like in my comments I want to draw attention to the variable you created called $disk. The output is below. Note this is from my own machine and wont match yours. Still, you should get the picture
DeviceID volumeName [math]::truncate($_.size / 1GB)
-------- ---------- -------------------------------
C: 111
D: Data 499
E: Multimedia 1362
F: 0
G: CentOS 7 x86_64 3
M: Media 2794
Z: 0
Without any other information I can only assume that you want a series of free space values to display. Given that we could break those results out of the array by casting them to string. Also want to update the line that populates the variable.
$disk = gwmi Win32_LogicalDisk | Select-Object DeviceID, volumeName, #{Label="Size(GB)";Expression={[math]::truncate($_.size / 1GB)}}
Gives us the following in $disk`
DeviceID volumeName Size(GB)
-------- ---------- --------
C: 111
D: Data 499
E: Multimedia 1362
F: 0
G: CentOS 7 x86_64 3
M: Media 2794
Z: 0
Then when you build your hashtable you can cast the array to a single space delimited string like this:
DriveSpace = [string]($disk."Size(GB)")
Fairly sure there will be more questions to come from this but it is at least a start. Welcome to SO. It is always a good idea when possible to show us desired output in cases like this so we know what you are trying to achieve. Even if you think it is obvious.
Side notes
You have other properties other that $disk that might have the same issues like Applications which is a complex object. If you do have issues with those as well solving this one might get you in the right direction.
You have many calls to gwmi Win32_OperatingSystem. You should save the results of that into a variable that you can refer to whenever you need it. Right now you are losing time calling it and getting the same results. For example:
$wmiOS = gwmi Win32_OperatingSystem

Answer 2

This is the default formatting of Powershell at work, as provided by Out-Default. It is truncating the DriveSpace array to display in a table in your console, but the information is still there. For example, if you type:
$props.DriveSpace
... you will see the full array displayed. The default formatting behaves differently when it's handling a simple array as opposed to when it's handling a complex object like the $props one you've created.
See also:
How Powershell Outputting and Formatting REALLY works