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From: phil@brahms.amd.com (Phil Ngai)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Western Digital 1006V-SR2 questions
Message-ID: <1991Mar19.205520.17671@amd.com>
Date: 19 Mar 91 20:55:20 GMT
References: <4157@ryn.mro4.dec.com>
Sender: usenet@amd.com (NNTP Posting)
Organization: Advanced Micro Devices, Inc.
Lines: 25

opr_fowler@mcis2.enet.dec.com (John Fowler) writes:
>1st. When performing a low-level format using the hard prep program which
>came on the WD1006 drive controller it stops at cyl #200 or so and just
>returns to the main menu. I have the drive user defined (type #1) as
>1224cyl, 15heads, 0 writeprecomp which is what the drive should handle.

The IBM Classic AT's hard disk controller only allocated 10 bits for
the cylinder number.

>2nd. I did manage to use type #9  (1024 x 15 no precomp) to complete the
>low level format and partition/high lvl format the drive using DOS but
>I then noticed it would not load the system from drive C: apon a power
>up/cold boot. It would however work fine using CTRL-ALT-DEL/warm boot.
>If I inserted a DOS floppy to load DOS, then CTRL-ALT-DEL for a warm
>boot, the C: drive would work fine.

One issue might be if your EMS is 16-bits. If the page frame is
in segment D000, you've got to make it 8-bit. Try taking out
the EMS and cold booting. If that works, either move your page
frame or make the EMS 8-bit. Yes, I know that sucks. IBM did it.

Do you have any other add-ins?

--
The Macintosh makes it easy to do sloppy work.