Date: Fri, 19 Jun 1998 07:41:02 -0400 (EDT) From: CyberPeasant <djv@bedford.net> To: robert@chalmers.com.au Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Continuing the sd1 disk size errors/earnings from kernel. Complex Message-ID: <199806191141.HAA10893@lucy.bedford.net> In-Reply-To: <3589E8F8.FDE960DD@chalmers.com.au> from Robert Chalmers at "Jun 19, 98 02:28:40 pm"
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Robert Chalmers wrote:
> Boot sequence messages;
>
> /kernel: sd1: invalid primary partition table: no magic
> /kernel: sd1: raw partition size != slice size
> /kernel: sd1: start 0, end 4109999, size 4110000
> /kernel: sd1c: start 0, end 5386239, size 5386240
> /kernel: sd1: truncating raw partition
>
>
> Output from disklabel sd1;
>
> # /dev/rsd1c:
> type: SCSI
> disk: c2490a
> label: sd1s1
> flags:
> bytes/sector: 512
> sectors/track: 32
> tracks/cylinder: 64
> sectors/cylinder: 2048
> cylinders: 2006
> sectors/unit: 4110000
> rpm: 3600
> interleave: 1
> trackskew: 0
> cylinderskew: 0
> headswitch: 0 # milliseconds
> track-to-track seek: 0 # milliseconds
> drivedata: 0
>
> 5 partitions:
> # size offset fstype [fsize bsize bps/cpg]
> a: 2055000 0 4.2BSD 0 0 0 # (Cyl. 0 - 1003*)
> b: 336640 2055000 swap # (Cyl. 1003*- 1167*)
> c: 4110000 0 unused 0 0 # (Cyl. 0 - 2006*)
> d: 1497300 2391640 4.2BSD 0 0 0 # (Cyl. 1167*- 1898*)
> e: 1497300 2612700 4.2BSD 0 0 0 # (Cyl. 1275*- 2006*)
>
>
>
> /etc/disktab entry;
>
> c2490a|Compaq C2490A SCSI:\
> :ty=winchester:dt=SCSI:ns#32:nt#64:nc#2630:\
> :pa#2055000:oa#0:ta=4.2BSD:\
> :pb#336640:ob#2055000:tb=swap:\
> :pc#5386240:oc#0:\
> :pd#1497300:od#2391640:td=4.2BSD:\
> :pe#1497300:oe#3888940:te=4.2BSD:
>
pe+oe= 5386240
sectors/unit = 4110000
In the disklabel, e overlaps d.
In the disktab 2630*64*32=5386240 ~= 2.7 GB or 2.57 depending on what a GB is
today.
Compaq calls this a 2.1 GB disk. As far as I can tell the disktab is in
error, referencing non existant sectors.
http://www.compaq.com/support/techpubs/qrg/volume2/appbhdcf.htm
The disklabel appears not so much in error, as not doing what you
probably want. You don't want d: and e: to overlap, I bet.
what does dmesg say about it?
Dave
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