More information is available through PowerShell and WMI:
Get-WmiObject –List
Get-WmiObject –List | Select-String -pattern "disk"
Get-WmiObject –List | Select-String -pattern "volume"
Get-WmiObject Win32_Volume
I'm not sure if it has information you're searching for, but it has huge amounts of info compared to commmand line tools and certainly worth digging.