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Old 04-26-2015, 10:43 AM   #1
zizzo2011
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copying a bootable cf to another one with knoppix


hello guys .... 1st iam 0 linux user but have some problems on one of our machine and i want to make a backup for my cf .... i have knoppix on my flash to boot from it and want step by step please what exact to do to copy this cf to another one .... i have 2 readers if its easier please looking for answer really fast , thx
 
Old 04-26-2015, 11:59 AM   #2
veerain
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Welcome to Linux Questions!

First arrange a compact flash of same size or bigger. Then use dd to copy it:

Code:
dd if=/dev/sdx of=/dev/sdy
Remember to replace sdx with source cf and sdy with destination cf,
 
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Old 04-26-2015, 12:04 PM   #3
zizzo2011
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Thx veera

But where to wright this order in knoppix? Kurnel or where... Iam 0 linux user.. And where do i know my original cf and the new one codes?

I would appreciate your reply

Last edited by zizzo2011; 04-26-2015 at 12:05 PM.
 
Old 04-26-2015, 12:18 PM   #4
veerain
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I don't have much experience on Knoppix.

But all you have to do is open a terminal app. And as root or admin user you have to type commands as I posted.

But before typing the said commands in terminal app run 'dmesg | tail -n 20' both before and after inserting a cf card. You will have interpret it and some where it would show the device as /dev/sdx or something similar (may be hdx or ubx). Do same after pluging second cf card. And CAREFUL don't put source card and destination card device files in reverse else you will loss all the content/data of card you want to copy.

Better is you make a backup of source card and then proceed. So to do that:

Code:
dd if=/dev/sdx of=backupfile.img

Last edited by veerain; 04-26-2015 at 12:19 PM.
 
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Old 04-26-2015, 12:22 PM   #5
zizzo2011
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Veera

Really thanks.. Another question can i just get usb flash with linux system on it and do what you told me so if i failed to deal with knoppix.. If that possible tell me so i download linux system and mount it on usb flash
 
Old 04-26-2015, 12:40 PM   #6
veerain
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You can use a linux system installed on a usb disk but ability to boot from the sub disk is must. First ensure your system can boot usb disks e.g. use a test disk.
 
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Old 04-26-2015, 12:42 PM   #7
zizzo2011
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Thanks alot for your instant replyes will try it out and will post the result... Thanks again veera
 
Old 04-27-2015, 02:53 AM   #8
zizzo2011
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now i decided to do it useing linux but when i searched for linux.iso i found ubuntu dunno what is it but is it same as linux on copying steps i mean the dd order? Please reply
 
Old 04-27-2015, 04:14 AM   #9
veerain
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Just learn how to use Knoppix and use commands.
 
Old 04-27-2015, 04:16 AM   #10
zizzo2011
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Any recommendation for an bdf that make me good in knoppix?
 
Old 04-27-2015, 04:24 AM   #11
veerain
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Read Linux tutorial in the right panel of this tutorial.

Learn relevant HOWTO's from The Linux Documentation Project.
 
Old 04-27-2015, 06:46 PM   #12
jefro
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Most people use linux that comes as what we call a distribution. Distro for short. A distro is a collection made for a target audience and hardware. Knoppix used to be rather unique but now almost every distro has a live media. They may not even both to say it anymore. Knoppix is mostly based on Debian I believe. However the basics of linux can be found as above but also in many other places. Skills for common command line apps are almost all the same between distro's.
 
Old 04-28-2015, 01:12 AM   #13
zizzo2011
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Thx i just got knoppix and its easier than what i thought but the question here if the original cf is lower on size than the new one would be aproblem while booting?
 
Old 04-28-2015, 02:47 AM   #14
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Not much a problem as Linux uses LBA (linear block address). Only with software which uses old msdos partitions with geometries.
 
Old 04-28-2015, 03:04 AM   #15
zizzo2011
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I have read some posts thats complain from the size and some advice the partition makeing method on the new cf... Can i do it by linux. And can i know the steps in case i found problem in size?

Thanks
 
  


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