change harddisk - Further explain of command lines

[Barry Yu]

dballester at kernpharma.com wrote:

>Both hd in same machine
>
>Suppouse that you wanna 'clone' /dev/hda to /dev/hdb
>
>install /dev/hdb
>
>Start the machine in single mode and:
>
>dd if=/dev/hda of=/dev/hdb
>
>Shutdown
>
>Extract /dev/hda
>Insert /dev/hdb in /dev/hda
>
>Start machine
>
>HTH
>
>David Ballester Montolio
>Responsable de Sistemas y Comunicaciones
>Kern Pharma, S.L.
>www.kernpharma.com
>
>GNU!
>
>
>|---------+------------------------------>
>|         |           Wolfgang           |
>|         |           <wolfgang at rpi.net.a|
>|         |           u>                 |
>|         |           Enviado por:       |
>|         |           fedora-list-admin at r|
>|         |           edhat.com          |
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>|         |                              |
>|         |           24/02/2004 12:16   |
>|         |           Por favor, responda|
>|         |           a fedora-list      |
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>  |     Para:     Fedora List <fedora-list at redhat.com>                                                                          |
>  |     cc:                                                                                                                     |
>  |     Asunto:   Re: change harddisk                                                                                           |
>  >-----------------------------------------------------------------------------------------------------------------------------|
>
>
>
>
>On Tue, 2004-02-24 at 21:53, kh wrote:
>  
>
>>My current harddisk is running out of space and i'm going to replace it
>>with something larger, and i want to bring my data with me over to the
>>new disk.
>>
>>It seems that i can use Norton Ghost before on a linux disk, anyone ever
>>tried this?
>>
>>btw i have redhat 8 on that disk.
>>
>>kh
>>    
>>
>
>If you use the latest version of Ghost you will be ok. The only thing
>that I have found, is that it may affect the Grub MBR contents. All I
>ended up doing was to boot the install CD then boot into rescue mode and
>reinstall grub back to the MBR, then I could boot the new drive again
>with the new partition sizes. Other than that, I found it to work very
>well. (And also works very quick)
>
>Wolf
>
>
>
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>------------------------------------
>
I am not familiar with above commands like : dd , inset and extract,  
will really appreciate if you could further explain so I can understand 
how they work.
Besides, my experience in using the CD booting up in rescue mode also 
may encounter unexpected problem; After I restored the Ghost image file 
back to original partition, then booted up Line CD into rescue mode, the 
rescue process for unknown reason failed to mount this original 
partition, a message said it has problem, so restore operation failed. 
It is better to make a boot up floppy with current o/s, in case the the 
CD rescue mode won't work, this boot up floppy will then be a life saver.
I also confirm that when used the partimage to make image file out of a 
partition when my Red Hat 9 installed. I had a successful restore 
without using CD rescue mode nor boot up floppy, just reboot the machine 
and everything is up and running fine - making linux image file for 
restore Ghost can't do that, including ver 8.0 (I  must  use  boot up 
floppy and then do grub-install).

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