Path: utzoo!utgpu!water!watmath!clyde!att!pacbell!lll-tis!helios.ee.lbl.gov!nosc!ucsd!ucsdhub!hp-sdd!hplabs!hpda!hp-sde!hpcea!hpnmd!hpsrla!hpsadla!dsd
From: dsd@hpsadla.HP (Donald St.Denis)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Hard Disks: XT vs. AT
Message-ID: <2490013@hpsadla.HP>
Date: 20 Jul 88 19:20:14 GMT
References: <11517@steinmetz.ge.com>
Lines: 28

>| Hi people: for a year now I have been running an Atasi 3046 drive in my
>| XT clone.  Recently I purchased an AT clone kit, planning on using the
>| Atasi as its hard drive.  So far, the hard disk "fails initialization"
>| and has resisted any attempts at low-level formatting in the AT.
>
>  I believe that AT disks are *not* ST506, they are ST412. The
>...
>	bill davidsen		(wedu@ge-crd.arpa)
     The drive interface is determined by the controller and drive, not the
     computer.  I used an ST225 (ST506 Interface) taken from my XT to boot
     a new AT clone I'd put together.  It worked.  I had a bit more trouble 
     getting a new ST225 formatted in the AT though.

>IBM modifies the cable so that all drives are to be configured as drive 2
>...
>Dale Frye @ Washington University in St. Louis
     I have not worked with many IBM PC's, but I thought the twisted cables
     were used for the floppy drives, not he HDs.


  	Are you using a different controller?  You could try what I did with
	my XT/AT, get the XT working with the drive, transfer over both
	controller and drive, and see if it boots.  This may work.

	Good Luck.

	Donald St. Denis
	Signal Analysis Division