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Date: Wed, 12 Mar 1997 14:09:42 -0800 (PST)
From: Doug White <dwhite@gdi.uoregon.edu>
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Reply-To: Doug White <dwhite@resnet.uoregon.edu>
To: "kevin_eliuk@sunshine.net" <root@sunshine.net>
cc: FreeBSD-questions <FreeBSD-questions@FreeBSD.ORG>
Subject: Re: Are my IDE parameters set correctly?
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On Wed, 12 Mar 1997, kevin_eliuk@sunshine.net wrote:

> Could anyone please comment on these outputs on my Maxtor IDE drive?
> I am confused because after having system failures resulting from read 
> errors I searched for current FAQS and through Question Archives and I am 
> not sure if the fsize and bsize in disklabel should be set differently or 
> remain as is. 

What are the error messages you're seeing, exactly?  THey should be in
/var/log/messages.

Does this machine have a CMD0640 or RZ1000 based IDE adapter?  You may be
seeing hidden corruption.

> 
> * Note: System running with Ontrack Disk Manager 7.02
> 
> kevin# fdisk
> ******* Working on device /dev/rwd0 *******
> parameters extracted from in-core disklabel are:
> cylinders=526 heads=64 sectors/track=63 (4032 blks/cyl)
> 
> parameters to be used for BIOS calculations are:
> cylinders=526 heads=64 sectors/track=63 (4032 blks/cyl)
> 
> Warning: BIOS sector numbering starts with sector 1
> Information from DOS bootblock is:
> The data for partition 0 is:
> sysid 84,(unknown)
>     start 9, size 2120823 (1035 Meg), flag 80
> 	beg: cyl 0/ sector 10/ head 0;
> 	end: cyl 55/ sector 63/ head 15
> The data for partition 1 is:
> <UNUSED>
> The data for partition 2 is:
> <UNUSED>
> The data for partition 3 is:
> <UNUSED>
> 
> kevin# disklabel -r /dev/rwd0s3
> # /dev/rwd0s3:
> type: ESDI
> disk: wd0s3
> label: 
> flags:
> bytes/sector: 512
> sectors/track: 63
> tracks/cylinder: 64
> sectors/cylinder: 4032
> cylinders: 316
> sectors/unit: 1274112
> rpm: 3600
> interleave: 1
> trackskew: 0
> cylinderskew: 0
> headswitch: 0		# milliseconds
> track-to-track seek: 0	# milliseconds
> drivedata: 0 
> 
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   a:    65536        0    4.2BSD        0     0     0 	# (Cyl.    0 - 16*)
>   b:    41120    65536      swap                    	# (Cyl.   16*- 26*)
>   c:  1274112        0    unused        0     0       	# (Cyl.    0 - 315)
>   e:    61440   106656    4.2BSD        0     0     0 	# (Cyl.   26*- 41*)
>   f:  1106016   168096    4.2BSD        0     0     0 	# (Cyl.   41*- 315*)
> 
> kevin# newfs -N /dev/rwd0s3
> /dev/rwd0s3:	65536 sectors in 16 cylinders of 1 tracks, 4096 sectors
> 	32.0MB in 1 cyl groups (16 c/g, 32.00MB/g, 7680 i/g)
> super-block backups (for fsck -b #) at:
>  32,
> 
> 
>  I'm not sure if this is the source of the problem or if this is a common 
> limitation with my particular drive. Any and all comments welcome.
> 

Doug White                              | University of Oregon  
Internet:  dwhite@resnet.uoregon.edu    | Residence Networking Assistant
http://gladstone.uoregon.edu/~dwhite    | Computer Science Major