to try out, start with this:
Code:

$Dsks = GetObject("winmgmts://$computername").ExecQuery("select * from Win32_DiskDrive")

if @error

 "Error occured: " @error " " @serror ? "Press the anyKey to quit" get $key quit

endif

for each $Item in $Dsks

  ? $Item.Size

next
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