Just noticed that I did not include questions@. It has been a long day.
Begin forwarded message:
Date: Wed, 23 Nov 2011 19:21:54 -0800
From: Robert <travelin...@cox.net>
To: "Julian H. Stacey" <j...@berklix.com>
Subject: Re: Invalid fdisk partition table found
Julian and Warren thanks for the responses.
On Wed, 23 Nov 2011 22:08:00 +0100
"Julian H. Stacey" <j...@berklix.com> wrote:
> Robert wrote:
> > Greetings
> >
> > [robert@dell64] ~> uname -a
> > FreeBSD dell64.shasta204.local 8.2-STABLE FreeBSD 8.2-STABLE #34:
> > Fri Nov 18 06:43:01 PST 2011
> > root@dell64.shasta204.local:/usr/obj/usr/src/sys/GENERIC amd64
> >
> > I have two Lexar Professional 600X 16GB compact flash cards that are
> > unusable. fdisk shows:
>
<clip>
> > Is there any way I can restore these CF cards to 16GB? Any help or
> > suggestions will be greatly appreciated.
>
> @ suggestions:
> 1 Try
> bsdlabel -B -w -r /dev/da1
[robert@dell64] ~> sudo bsdlabel -B -w -r /dev/da1
Password:
[robert@dell64] ~>
> echo unplug, reinsert
Not sure if you actually wanted me to unplug and reinsert the CF
card...so I did both
[robert@dell64] ~> echo unplug, reinsert
unplug, reinsert
and physically unplugged and reinserted the CF card
> newfs /dev/da1a
^ ???
[robert@dell64] ~> sudo newfs /dev/da1a
newfs: /dev/da1a: could not find special device
[robert@dell64] ~> sudo newfs /dev/da1
/dev/da1: 29.5MB (60480 sectors) block size 16384, fragment size 2048
using 4 cylinder groups of 7.39MB, 473 blks, 960 inodes.
super-block backups (for fsck -b #) at:
160, 15296, 30432, 45568
cg 0: bad magic number
[robert@dell64] ~>
fdisk /dev/da1
******* Working on device /dev/da1 *******
parameters extracted from in-core disklabel are:
cylinders=29 heads=64 sectors/track=32 (2048 blks/cyl)
parameters to be used for BIOS calculations are:
cylinders=29 heads=64 sectors/track=32 (2048 blks/cyl)
fdisk: invalid fdisk partition table found
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 32, size 59360 (28 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 28/ head 63/ sector 32
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
No change from before.
>
> 2 Base of _my_ man fdisk
> " When running multi user, you cannot write unless you first run
> this: sysctl kern.geom.debugflags=16
I had failed to mention in the original post that I had seen something
in my searches about problems since 7.1. I had tried booting from an
old 6.2 disk and attempted all of this under "fixit" with no luck.
And also tried in single user mode.
Warren,
[robert@dell64] ~> sudo gpart destroy -F da1
gpart: geom 'da1': Invalid argument
[robert@dell64] ~> sudo gpart create -s GPT da1
da1 created
[robert@dell64] ~> sudo gpart bootcode -b /boot/pmbr da1
bootcode written to da1
[robert@dell64] ~> sudo gpart destroy -F da1
da1 destroyed
[robert@dell64] ~> fdisk /dev/da1
******* Working on device /dev/da1 *******
parameters extracted from in-core disklabel are:
cylinders=29 heads=64 sectors/track=32 (2048 blks/cyl)
parameters to be used for BIOS calculations are:
cylinders=29 heads=64 sectors/track=32 (2048 blks/cyl)
fdisk: invalid fdisk partition table found
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 32, size 59360 (28 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 28/ head 63/ sector 32
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
I see the flashing lights like it is writing to the CF card but nothing
changes.
More suggestions welcome. These are quite expensive CF cards.
Thanks again
Robert
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