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From: brian@shift.utell.net (Brian Somers)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Making disk image backup
Date: 16 May 1997 10:17:36 GMT
Organization: Awfulhak Ltd.
Lines: 61
Message-ID: <5lhc80$4ac@ui-gate.utell.co.uk>
References: <01bc60df$afc618a0$16143ccb@clementc.ans.com.au>
<5lf710$3av@ui-gate.utell.co.uk>
<01bc6143$53026420$16143ccb@clementc.ans.com.au>
Reply-To: brian@awfulhak.org, brian@utell.co.uk
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Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:41018
In article <01bc6143$53026420$16143ccb@clementc.ans.com.au>,
"Clement Cheung" <clement@ans.com.au> writes:
> Brian Somers <brian@shift.utell.net> wrote in article
> <5lf710$3av@ui-gate.utell.co.uk>...
>> In article <01bc60df$afc618a0$16143ccb@clementc.ans.com.au>,
>> "Clement Cheung" <clement@ans.com.au> writes:
>> > I use this command to make disk image backup:
>> >
>> > dd if=/dev/wd0c of=/dev/wd2c bs=1024k
>> >
>> > It works well in BSDI 2.1. It seeems to work in FreeBSD 2.2.1 as well.
>
>> > But I get this error message after using it:
>> >
>> > dd: /dev/wd0c: Invalid argument
>> >
>> > Do you have a solution? Or can I simply ignore it?
>>
>> This error says you have no FreeBSD partition on IDE disk 0.
>
> This cannot be right. IDE disk 0 is where the FreeBSD itself is located.
> IDE disk 1 is just placed there for the backup.
>
>> I'd suggest that you specify the slice that you want to
>> dump from - ie. wd0s0 for slice 0.
>
> Tried, but does not work!
Ahhhh, have you tried specifying the raw partitions ?
dd if=/dev/rwd0c of=/dev/rwd2c bs=1024k
>> AFAIK, there's no device that represents the whole physical
>> disk anymore. Please, someone, tell me I'm wrong.
>
> /dev/wd0c should represent the whole physical disk. This is what the disk
> label says.
/dev/wd0c represents the whole of the first physical FreeBSD
partition on the disk - so if you have another partition, it's
not part of wd0c.
>> > The configuration is as below:
>> > Pentium 180
>> > 128MB
>> > 2.5GB EIDE as master on IDE 0
>> > 2.5GB EIDE as master on IDE 1
>> > FreeBSD v2.2.1
>> >
>> > Thank you very much for your help.
>> >
>
> Thank you for your response.
>
> Regards
> Clement
--
Brian <brian@awfulhak.org> <brian@freebsd.org>
<http://www.awfulhak.org>
Don't _EVER_ lose your sense of humour !