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Date: Sun, 9 Apr 2000 19:40:33 -0700 (PDT)
From: asherrod@sharemedia.com
To: freebsd-gnats-submit@FreeBSD.org
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Subject: i386/17888: Still having trouble identifying disk geometry (in ata-disk.c now)
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>Number:         17888
>Category:       i386
>Synopsis:       Still having trouble identifying disk geometry (in ata-disk.c now)
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Apr  9 19:50:04 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Andrew Sherrod
>Release:        4.0
>Organization:
Sharemedia
>Environment:
>Description:
This problem existed in wd.c and was carried over to ata-disk.c.

I have been told over and over it is not a "real" problem. Asking 
various users, I have discovered that I am not alone in experiencing 
this. Of course, others just followed the "Well, add a DOS partition,
and let Microsoft fix your problem" advice. But it IS a problem.

Whenever I install I have to go back and re-write the disk driver then
re-run newfs, etc... It is a problem. It can be fixed (easily).

My drives are not antiques or that unusual. One Western Digital, one
Maxtor. Okay, cheap disks, but not uncommon.

The problem: Not all disks return 16383 cylinders to indicate LBA mode
must be used. Mine return 4192, which rsults in rather small disk sizes.


>How-To-Repeat:
Boot the system with one of the disks in question. Try running 
/stand/sysinstall. Look at how small the disks just became.
>Fix:
129c129,130
<

>Release-Note:
>Audit-Trail:
>Unformatted:


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