If all else fails you may want to try a low level format on the hard
drive. Boot with a MS-Dos ver 2.10 or later, run debug. At the '_'
prompt type in g=c800:5 which should access the controller rom and
enable you to low level format (it is <crudely> menu driven). Your
Tandon has 306 cylinders, 4 heads and 17 sectors per track. After the
low level format procede with the high level partitioning and
formatting.
-Marty
This may work on a Kaypro PC -- but not on the K10 which is a CP/M
non-x86 machine.
The WD controller has no format embedded in ROM. To format it
you need either the utilities or the ability to write your own format.
Bill