Imaging the hard drive?

Imaging the hard drive?

[Octavian Rasnita]

Hi all,

Do you know if I can create an image of the hard disk if I have Red Hat
installed on it?
I would like to use Norton Ghost from a floppy disk for that.
If it is not possible, do you know if there is any  imaging application for
Linux?

I want to create that image to be able to install it  with no sighted help,
or on another computer.

Thank  you.
Teddy,
My dear email address is orasnita@yahoo.com



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Re: Imaging the hard drive?

[Janina Sajka]

Imaging in linux is the easiest imaging you will ever do. 

Use the dd command partition by partition as follows:

dd if=[partition] of=[filename]

So, to image your third partition on the first IDE disk to a file in 
/home:

dd if=/dev/hda3 of=/home/hda3.img

To go the other way and restore from this file:

dd if=/home/hda3.img of=/dev/hda3

PS: Your mbr will be saved when you image /dev/hda1. Or, you can do it 
separately as explained in the lilo installation HOWTO:

dd if=/dev/hda of=/home/mbr.img bs=512 count=1


I used to use ghost. This is much easier.



On Mon, 18 Mar 2002, Octavian Rasnita wrote:

> Hi all,
> 
> Do you know if I can create an image of the hard disk if I have Red Hat
> installed on it?
> I would like to use Norton Ghost from a floppy disk for that.
> If it is not possible, do you know if there is any  imaging application for
> Linux?
> 
> I want to create that image to be able to install it  with no sighted help,
> or on another computer.
> 
> Thank  you.
> Teddy,
> My dear email address is orasnita@yahoo.com
> 
> 
> 
> _________________________________________________________
> Do You Yahoo!?
> Get your free @yahoo.com address at http://mail.yahoo.com
> 
> 
> 
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://listman.redhat.com/mailman/listinfo/blinux-list
> 

-- 
	
				Janina Sajka, Director
				Technology Research and Development
				Governmental Relations Group
				American Foundation for the Blind (AFB)

Email: janina@afb.net		Phone: (202) 408-8175

Chair, Accessibility SIG
Open Electronic Book Forum (OEBF)
http://www.openebook.org

Re: Imaging the hard drive?

[Mike Gorse]

Janina, I am not sure that that would work well for what he wants to do.
I would not trust dd to make an image of a file system for the purpose of
transporting it to another computer which may have a different hard disk
and a Linux partition of a different size.  Tar should work well, however,
so long as you pass it parameters to exclude anything that you do not want
copied (ie, /proc).

-- Michael Gorse / AIM:linvortex / http://mgorse.home.dhs.org --

On Mon, 18 Mar 2002, Janina Sajka wrote:

> Imaging in linux is the easiest imaging you will ever do.
>
> Use the dd command partition by partition as follows:
>
k

Re: Imaging the hard drive?

[Willem van der Walt<vdwaltw@health.gov.za>]

Hi,
I have done that successfully accross
different disks.
I think as long as one dd the partition with an existing fs on it
to a partition on the new disk with a simmelar partition that is the same
size or larger as the origional one, one should be ok.
regards, Willem
 
On Tue, 19 Mar 2002, Mike Gorse wrote:

> Janina, I am not sure that that would work well for what he wants to do.
> I would not trust dd to make an image of a file system for the purpose of
> transporting it to another computer which may have a different hard disk
> and a Linux partition of a different size.  Tar should work well, however,
> so long as you pass it parameters to exclude anything that you do not want
> copied (ie, /proc).
> 
> -- Michael Gorse / AIM:linvortex / http://mgorse.home.dhs.org --
> 
> On Mon, 18 Mar 2002, Janina Sajka wrote:
> 
> > Imaging in linux is the easiest imaging you will ever do.
> >
> > Use the dd command partition by partition as follows:
> >
> k
> 
> 
> 
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://listman.redhat.com/mailman/listinfo/blinux-list
> 

-- 
Willem van der Walt
Information Services Directorate
Department of Health
South Africa
tel: 27 12 3120700

Re: Imaging the hard drive?

[Janina Sajka]

You're correct, Mike. dd will write an exact byte by byte image. He was 
asking about Ghost, and I think this would be the analog to Ghost. tar is 
also an excellent choice, however.
 On Tue, 19 Mar 2002, Mike Gorse wrote:

> Janina, I am not sure that that would work well for what he wants to do.
> I would not trust dd to make an image of a file system for the purpose of
> transporting it to another computer which may have a different hard disk
> and a Linux partition of a different size.  Tar should work well, however,
> so long as you pass it parameters to exclude anything that you do not want
> copied (ie, /proc).
> 
> -- Michael Gorse / AIM:linvortex / http://mgorse.home.dhs.org --
> 
> On Mon, 18 Mar 2002, Janina Sajka wrote:
> 
> > Imaging in linux is the easiest imaging you will ever do.
> >
> > Use the dd command partition by partition as follows:
> >
> k
> 
> 
> 
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://listman.redhat.com/mailman/listinfo/blinux-list
> 

-- 
	
				Janina Sajka, Director
				Technology Research and Development
				Governmental Relations Group
				American Foundation for the Blind (AFB)

Email: janina@afb.net		Phone: (202) 408-8175

Chair, Accessibility SIG
Open Electronic Book Forum (OEBF)
http://www.openebook.org

Re: Imaging the hard drive?

[Anders Holmberg]

Helo!
I have a question about imaging harddrives.
Can i use dd to create an image of a direcoto on a harddrive.
Fo example i have a dirctor callde waves whith alot of subdirectories.
The waves directory is on a drive mounted as /mnt/d and has the tevice 
name /dev/hdc2.
How would i typ to make an image oftthe diretory with the subdirectories.
/Anders.

Re: Imaging the hard drive?

[Peter Toneby]

Hi Anders

You should mount /dev/hdc2 and then copy the directory (cp -r), there is no
reason to make it harder than that.

/Peter

On Tue, Mar 19, 2002 at 09:00:15PM +0100, Anders Holmberg wrote:
> Helo!
> I have a question about imaging harddrives.
> Can i use dd to create an image of a direcoto on a harddrive.
> Fo example i have a dirctor callde waves whith alot of subdirectories.
> The waves directory is on a drive mounted as /mnt/d and has the tevice 
> name /dev/hdc2.
> How would i typ to make an image oftthe diretory with the subdirectories.
> /Anders.

-- 
Alpha Test Version:  Too buggy to be released to the paying public. 
Beta Test Version:  Still too buggy to be released. 
Release Version:  Alternate pronunciation of "Beta Test Version". 

Re: Imaging the hard drive?

[Anders Holmberg]

Hello! Yes i know but if i would lik to create a cde-image of the
tdirectory? Isn't dd a good suggestiont then? /Anders.

Re: Imaging the hard drive?

[Peter Toneby]

no

mkisofs is what you want, it creates an ISO from a directory.
see:
http://www.fokus.gmd.de/research/cc/glone/employees/joerg.schilling/private/mkisofs.html
You should find the proper link somwhere among all that crap.

/Peter
-- 
Alpha Test Version:  Too buggy to be released to the paying public. 
Beta Test Version:  Still too buggy to be released. 
Release Version:  Alternate pronunciation of "Beta Test Version". 

Re: Imaging the hard drive?

[Octavian Rasnita]

Could that be used for creating an image of a key from the hard disk?
The key of Jaws for Windows, for example.
Teddy,
My dear email address is orasnita@yahoo.com

----- Original Message -----
From: "Peter Toneby" <woormie@acc.umu.se>
To: <blinux-list@redhat.com>
Sent: Wednesday, March 20, 2002 12:14 AM
Subject: Re: Imaging the hard drive?


no

mkisofs is what you want, it creates an ISO from a directory.
see:
http://www.fokus.gmd.de/research/cc/glone/employees/joerg.schilling/private/
mkisofs.html
You should find the proper link somwhere among all that crap.

/Peter
--
Alpha Test Version:  Too buggy to be released to the paying public.
Beta Test Version:  Still too buggy to be released.
Release Version:  Alternate pronunciation of "Beta Test Version".



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Re: Imaging the hard drive?

[Anders Holmberg]

Hello! Thank you. I'l give it a try. /Anders.

Re: Imaging the hard drive?

[Jude DaShiell]

Why not make everybody happy and pipe the dd output into tar with the Z
option so compressed tar files come out?  Is /proc all that needn't be
backed up or do other directory trees exist too?  I could make a little
script out of this perhaps and share it with the list.  The thing is, it's
possible to make those compressed tar files land on zip disks which is how
I'd do it for myself but the thing I'd like to figure out is if tar could
be told to put a unique disk number into each file it wrote on those zip
disks.  That way ordering of disks for restore would be easy for blind or
sighted people.

On Tue, 19 Mar 2002, Janina Sajka wrote:

> You're correct, Mike. dd will write an exact byte by byte image. He was
> asking about Ghost, and I think this would be the analog to Ghost. tar is
> also an excellent choice, however.
>  On Tue, 19 Mar 2002, Mike Gorse wrote:
>
> > Janina, I am not sure that that would work well for what he wants to do.
> > I would not trust dd to make an image of a file system for the purpose of
> > transporting it to another computer which may have a different hard disk
> > and a Linux partition of a different size.  Tar should work well, however,
> > so long as you pass it parameters to exclude anything that you do not want
> > copied (ie, /proc).
> >
> > -- Michael Gorse / AIM:linvortex / http://mgorse.home.dhs.org --
> >
> > On Mon, 18 Mar 2002, Janina Sajka wrote:
> >
> > > Imaging in linux is the easiest imaging you will ever do.
> > >
> > > Use the dd command partition by partition as follows:
> > >
> > k
> >
> >
> >
> > _______________________________________________
> > Blinux-list mailing list
> > Blinux-list@redhat.com
> > https://listman.redhat.com/mailman/listinfo/blinux-list
> >
>
> --
>
> 				Janina Sajka, Director
> 				Technology Research and Development
> 				Governmental Relations Group
> 				American Foundation for the Blind (AFB)
>
> Email: janina@afb.net		Phone: (202) 408-8175
>
> Chair, Accessibility SIG
> Open Electronic Book Forum (OEBF)
> http://www.openebook.org
>
>
>
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://listman.redhat.com/mailman/listinfo/blinux-list
>

Re: Imaging the hard drive?

[John]

On Sunday 11 August 2002 01:15, Jude DaShiell wrote:
> Why not make everybody happy and pipe the dd output into tar with the Z
> option so compressed tar files come out?  Is /proc all that needn't be

That is not how you use tar, and tar will get extremely shirty about it.

You use tar thus:
tar -cl -C / . boot home ...

-c means create
-l means use local filesystems (that is, don't cross mount-points)
-C means change to the specified directory before starting work
Then I named the filesystems to backup. Change to suit your circumstances.



> backed up or do other directory trees exist too?  I could make a little
> script out of this perhaps and share it with the list.  The thing is, it's
> possible to make those compressed tar files land on zip disks which is how
> I'd do it for myself but the thing I'd like to figure out is if tar could
> be told to put a unique disk number into each file it wrote on those zip
> disks.  That way ordering of disks for restore would be easy for blind or
> sighted people.

Zip disks are awfully small, and have these difficulties:
1) Subject to erasure by fluctuating magnetic fields (think mobile phones that 
vibrate)
2) You require a zip drive to read them
3) Are expensive. Did I mention small?

In contrast, a CD burner costs about the same, maybe less that a Zip drive.
In contrast,
1) CDs are immune to fluctuating magnetic fields
2) Can be read in any (reasonably recent) CD drive
3) Are relatively large - over six times the capacity of a 100 Mbyte Zip disk.
4) Are cheap.

I recomment afio (which does not come with RHL) over tar for backup purposes. 
You can specify the volume size for both, and you can run a user script at 
enf-of-volume for each, but the size you tell tar is the size of the 
uncompressed data whereas afio understands the size you tell it is the amount 
of compressed data to write.


> 
> On Tue, 19 Mar 2002, Janina Sajka wrote:
> 
> > You're correct, Mike. dd will write an exact byte by byte image. He was
> > asking about Ghost, and I think this would be the analog to Ghost. tar is
> > also an excellent choice, however.
> >  On Tue, 19 Mar 2002, Mike Gorse wrote:
> >
> > > Janina, I am not sure that that would work well for what he wants to do.
> > > I would not trust dd to make an image of a file system for the purpose 
of
> > > transporting it to another computer which may have a different hard disk
> > > and a Linux partition of a different size.  Tar should work well, 
however,
> > > so long as you pass it parameters to exclude anything that you do not 
want
> > > copied (ie, /proc).
> > >
> > > -- Michael Gorse / AIM:linvortex / http://mgorse.home.dhs.org --
> > >
> > > On Mon, 18 Mar 2002, Janina Sajka wrote:
> > >
> > > > Imaging in linux is the easiest imaging you will ever do.
> > > >
> > > > Use the dd command partition by partition as follows:
> > > >
> > > k
> > >
> > >
> > >
> > > _______________________________________________
> > > Blinux-list mailing list
> > > Blinux-list@redhat.com
> > > https://listman.redhat.com/mailman/listinfo/blinux-list
> > >
> >
> > --
> >
> > 				Janina Sajka, Director
> > 				Technology Research and Development
> > 				Governmental Relations Group
> > 				American Foundation for the Blind (AFB)
> >
> > Email: janina@afb.net		Phone: (202) 408-8175
> >
> > Chair, Accessibility SIG
> > Open Electronic Book Forum (OEBF)
> > http://www.openebook.org
> >
> >
> >
> > _______________________________________________
> > Blinux-list mailing list
> > Blinux-list@redhat.com
> > https://listman.redhat.com/mailman/listinfo/blinux-list
> >
> 
> 
> 
> _______________________________________________
> Blinux-list mailing list
> Blinux-list@redhat.com
> https://listman.redhat.com/mailman/listinfo/blinux-list
> 
> 

-- 


Cheers
John.

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