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From: jc58+@andrew.cmu.edu (Johnny J. Chin)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: New hard disk for old AT?!
Message-ID: <4bLoipO00WBLM18ZgT@andrew.cmu.edu>
Date: 7 Dec 90 07:58:45 GMT
References: <1990Dec5.153248.10714@csrd.uiuc.edu>,
	<1990Dec5.180714.13544@csrd.uiuc.edu>
Distribution: comp
Organization: Carnegie Mellon, Pittsburgh, PA
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In-Reply-To: <1990Dec5.180714.13544@csrd.uiuc.edu>

Excerpts From Captions of netnews.comp.sys.ibm.pc.hardware:
 5-Dec-90  Re: New hard disk for old AT?! David K. Poulsen@sp1.csr (557)    
>JDR Microelectronics catalog sells some Seagate drives such as ST 225
>(20Mb MFM) and ST 238 (32Mb RLL) but I have no idea if these are compatible
>with my system without getting a new controller or changing cabling or
>whatever.

As I said earlier ... the ST-225 will work ... the ST-238 will *NOT*.
As for the cabling ... if your cables are still the same from the day IBM
installed them (ie. the 34-pin connector with the twist is connected to the
existing hard drive), then all you have to do is change the drive select of
the new drive from either DS0 to DS1, or DS1 to DS2 (whatever, the second
lowest drive select).  And then just connect the drive to the other connector.
Do a low-level format (make sure you enter the bad tracks), followed by FDISK,
and a DOS FORMAT ... you should be up and running.

I hope this works out for you.

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Disclaimer:     The views expressed herein are STRICTLY my own, and not CMU's.