Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!gatech!hubcap!ncrcae!cs-col!gregory
From: gregory@cs-col.Columbia.NCR.COM (Clark Gregory)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Disk Driver Formatting in
Summary: Check strapping of flex if DIR shows old directory
Message-ID: <296@cs-col.Columbia.NCR.COM>
Date: 3 Oct 89 13:17:21 GMT
References: <89274.031211DLV101@PSUVM.BITNET> <3862.25268ef6@uwovax.uwo.ca>
Reply-To: gregory@cs-col.Columbia.NCR.COM (Clark Gregory)
Organization: NCR Customer Services Support Team, Columbia, SC
Lines: 29

In previous articles (I missed the origional) I have seen:
> I have a disk drive.... When I start the system the first diskette I read
> will have a proper directory, but any other diskette later will give me
> the SAME directory as the first....

There is a strap on flex drives that effects the use of pin 34 of the 
interface.  Some systems use this signal to indicate that a flex is present
and ready while the AT uses this to indicate that the door has been opened
(ie it dies not have to read the directory again).  There is a strap in the
drive that indicates how this signal is to be used.  I suggest you check
the technical information with the drive if possible or a local store
may have this information available also.  Also refer to the book listed
below.

I suggest you get this fixed, else MS/DOS may write the directory and
FAT table of the first disk to the second disk.  (NOT very nice of it!)

Give credit where due:
This is discussed in the book:
Upgrading and Repairing PCs
By: Scott Mueller
Pub: Que Corp, Carmel Indiana.
Should be available at local book stores (My local computer store
doesnt seem to believe in little things like documentation).
See page 312 on.

Clark Gregory
Customer services
NCR Corp, E&M Columbia  (HOME OF THE UNIX TOWER - Thats right UNIX)