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From: ariel@seer.UUCP (Catherine Hampton)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: 3.5" drive in a PC?
Summary: What version of DOS are you running?
Message-ID: <656@seer.UUCP>
Date: 20 Oct 90 21:23:04 GMT
References: <40931@eerie.acsu.Buffalo.EDU>
Followup-To: comp.sys.ibm.pc.hardware
Organization: Brad Lanam  Alamo, CA
Lines: 18

In article <40931@eerie.acsu.Buffalo.EDU> trljim@ubvmsa.cc.buffalo.edu writes:
>I wonder if anyone can answer a question.  I have a 720K 3.5" drive I want
>to install in an origional PC. It had two 5.25" drives so I simply replaced
>one with the 3.5" drive ( I assumed then the mother board switches were set
>already for 2 drives etc ... ) but the machine thinks the 720K drive is
>still a 360K drive! ... Like I said this is an origional PC ( circa 1983)
>if I replace the disk controller with a more modern piece will that let me
>use the drive as 720K??  ( It can *read* a 720K disk but cannot format a
>new disk ... that is it thinks its 360K)

You have to be running DOS 3.2 or later to access 3.5 inch drives correctly.
You might check on this before you spend money on a new controller card.

Cathy
_________________________________________________________________
Catherine A. Hampton                  BITNET: hampton@reed.BITNET
CIS: 71601,3130                      Fidonet: Cathy H. @ 1:125/32
GEnie: C.HAMPTON3     Internet: hampton@reed.EDU / ariel@seer.COM