Hate to tell you this, but I think someone has replaced the original
drives. The Hard Drive should be a removable disk, or did they make
unclassified Tempest systems?.
That was not a tempest system requirement, though it could be impmented
as a feature. Removeable in tempest terms meant the drive could be
removed, if needed, but not always removeable media.
Consider that microvaxen with standard MFM drives were delivered as
tempest machines.
Allison