Circuits and methods are provided for write through drivers in disk drive
systems. A write through driver is a transceiver that includes a write
driver circuit and a receiver circuit. The write driver drives a current
signal to a write element through a first conductive interconnect. The
write element writes data patterns to a magnetic hard disk in response to
the current signal from the write driver circuit. The current signal
returns to the receiver circuit through a second conductive interconnect.
The return signal can be used for the diagnosis of write-safe conditions.