[comp.sys.ibm.pc] At hard disks on PC

galvin@yale.UUCP (Peter Galvin) (11/02/87)

Hello,
I have a PC clone (a Columbia, actually) which has a hard disk which is on
its last legs.  I'm probably going to be buying a 80286 ot 386 based system
soon, though, so I'd prefer to get a fast hard disk now, and then transfer
it to the faster system when I buy it.

So, the question is, can I buy an AT hard disk and use it in my clone?
If so, I assume that I'd need to buy a new controller too, yes?

Thanks for any info.

						--Peter

burton@parcvax.Xerox.COM (Philip M. Burton) (11/08/87)

>
>So, the question is, can I buy an AT hard disk and use it in my clone?
>If so, I assume that I'd need to buy a new controller too, yes?
>


Both XT and AT controllers use the ST506 phyiscal interface, with the same
cabling,power connectors, etc.  In general, "AT" drives give better performance
than "XT" drives because of better access times.  (However, some unscrupulous
dealers put XT-type drives in low-cost AT clones, and the customer doesn't
get the full performance benefit of an AT.)

Since AT-class drives are generally 20 MB and up, you'll probably need a
new controller.  Check the with the controller manufacturer for compatibility
wity your Columbia.

You may find that a hardcard is more compatible, even if more expensive.



-- 
Philip Burton       burton.osbunorth@parcvax.COM  
Xerox Corp.         .... !hplabs!parcvax!burton 
408 737 4635    ... the usual disclaimers apply ...

justin@inmet.UUCP (11/11/87)

/* Written  2:35 pm  Nov  2, 1987 by galvin@yale.UUCP in inmet:comp.sys.ibm.pc */
/* ---------- "At hard disks on PC" ---------- */
Hello,
I have a PC clone (a Columbia, actually) which has a hard disk which is on
its last legs.  I'm probably going to be buying a 80286 ot 386 based system
soon, though, so I'd prefer to get a fast hard disk now, and then transfer
it to the faster system when I buy it.

So, the question is, can I buy an AT hard disk and use it in my clone?
If so, I assume that I'd need to buy a new controller too, yes?

Thanks for any info.

						--Peter
/* End of text from inmet:comp.sys.ibm.pc */

While we're on the subject --

	I also have a Columbia MPC whose hard disk is dying. When I got
my current disk, I was given a lot of hassle about getting one that was
compatible with the Columbia, but I increasingly suspect that this was
simply the incompetence of my dealer.

	The question is: can I use an off-the-shelf PC hard disk in my
Columbia? I'm very interested in getting a Gold Card, or the new Kodak
mega-floppy, but I don't want to get something and then discover that
it doesn't work in my machine.
					Thanx,
					  Justin du Coeur