echo Scheduling shutdown in 1.5 hours.
shutdown.exe /h /t 5400
As it turns out, you can't actually use /h with /t. (Although /s works fine with /t) My solution was to learn some VBScript and kill the problem with excessive firepower! All you need to do is type the following code into an editor and save it as a *.vbs file. (I called mine Hibernate.vbs) I placed it right on the desktop for quick access.
hours = 0.001 'Specify the # of hours to sleep here
seconds = hours * 60 * 60
ms = seconds * 1000
Set wshShell = WScript.CreateObject("WScript.Shell")
WScript.Echo("Hibernate in " & seconds & " seconds")
cancel = wshShell.Popup("Cancel Hibernate?", 10, "System Shutdown!", VbYesNo + VbExclamation)
If cancel = VbYes Then
This script will inform the user that hibernation will occur. Once the user presses OK then it will wait the specified number of hours before re-informing the user that hibernation is happening. If the user doesn't respond or opt to cancel, then the script continues and the computer is sent into hibernation.