#: 55030 S5/T1000/1400/3000/4K
    11-Nov-93  22:14:25
Sb: T4000 HD upgrade
Fm: Robert H. Martin 70474,1613
To: all

This describes how I replaced the 70MB HD in a T4K with a larger IDE HD that 
was not supported by the setup.  

Tandy said that to replace my 70meg MFM HD I needed to replace my current HD
Controller Board (250-4058) with their Controller Board 25-1095, which can be
used with XT and AT machines. This board handles larger HD than the normal 
setup supports.  It lists for $149.95 and operates with 8 bit data access.

However, I found that Acculogic has a series of HD controller boards for AT
and XT machines and their "sIDE-3/PLUS" model was just what I needed to handle 
the larger HD.  What's more, it operates with 16 bit data trnsfer.  The 
important feature of this model is that it contains an onboard BIOS that 
handles translation of larger capacity HDs.  Upon bootup after installation, 
when you are asked what type of hard drive is present, just tell it type 1 
(10 Meg).  This signals the BIOS to interrogate the hard drive and discover 
automatically its specs on cylinders, heads, etc.  Then the controller 
translates as necessary for the HD capacity.  

The installation ran very smoothly and the controller works fine. The best part 
is that the board cost only $42.99 at CompUSA!