Hello, I have a disk image of about 8.4G that I took from a friends computer about 18 months ago. Since then the harddrive has been reformatted and that data lost. I would like to send disk image via CD's to the UK where the disk image can be reassembled. I imagine that might take about 12-13 CD's the file is recognised as a xxxxxx.dat file and I am sure I made it using something like dd if=/dev/hda5 of=/mnt/hdb11/image_name.dat Would people be prepared to offer any hints on how to do that? Cheers
On 10/3/06, Chris O'Halloran <cmoman(a)gmail.com> wrote:
Hello,
I have a disk image of about 8.4G that I took from a friends computer about 18 months ago. Since then the harddrive has been reformatted and that data lost.
I would like to send disk image via CD's to the UK where the disk image can be reassembled. I imagine that might take about 12-13 CD's
the file is recognised as a xxxxxx.dat file and I am sure I made it using something like
dd if=/dev/hda5 of=/mnt/hdb11/image_name.dat
Would people be prepared to offer any hints on how to do that?
Cheers
Chris, Basically the easiest way is to split into chunks that are smaller than CD size. Then you put them on CDs. At the other end you can put them back together using the cat command like: cat chunk1 chunk2 chunk3 > bigfile As for splitting I see there is a split command in Debian and probably and others. Do "man split" to get more help. I haven't tested this. I also googled and found this: http://www.bluehaze.com.au/unix/cdbkup.html that fsplit does splitting for backups. I would definitely test on some binary files to check this all works though. Try chopping up a JPEG photo or similar and test reassembly. There probably is a program out there to make this all easy but I don't know what it is! Ian -- Ian McDonald Web: http://wand.net.nz/~iam4 Blog: http://imcdnzl.blogspot.com WAND Network Research Group Department of Computer Science University of Waikato New Zealand
On 03/10/06, Chris O'Halloran <cmoman(a)gmail.com> wrote:
Hello,
Hi fellow Committee member :-)
I have a disk image of about 8.4G that I took from a friends computer about 18 months ago. Since then the harddrive has been reformatted and that data lost.
I would like to send disk image via CD's to the UK where the disk image can be reassembled. I imagine that might take about 12-13 CD's
Would people be prepared to offer any hints on how to do that?
For the cost of about 12CDs, you could write the whole file on one dual layer DVD, assuming you have a DVD/DL writer, and they can read the media. Failing that, the "split" program can split a file into suitable sizes (the -b option specifies the number of bytes per file). Once the file is split, simply copy each file onto a CD. At the other end, you can join the files together, e.g. "cat xaa xab xac > xxxx.dat" There is probably some nice gui way of doing it, but I don't know (maybe check gnome's file roller). -- simon
Thanks for that. I'll copy the file, work out the md5sum, split it and then reassemble and check the md5sum. The split command appears to have some nice switch options. Cheers Chris On 03/10/06, Simon Green <simon(a)simongreen.net> wrote:
On 03/10/06, Chris O'Halloran <cmoman(a)gmail.com> wrote:
Hello,
Hi fellow Committee member :-)
I have a disk image of about 8.4G that I took from a friends computer about 18 months ago. Since then the harddrive has been reformatted and that data lost.
I would like to send disk image via CD's to the UK where the disk image can be reassembled. I imagine that might take about 12-13 CD's
Would people be prepared to offer any hints on how to do that?
For the cost of about 12CDs, you could write the whole file on one dual layer DVD, assuming you have a DVD/DL writer, and they can read the media.
Failing that, the "split" program can split a file into suitable sizes (the -b option specifies the number of bytes per file). Once the file is split, simply copy each file onto a CD. At the other end, you can join the files together, e.g. "cat xaa xab xac > xxxx.dat"
There is probably some nice gui way of doing it, but I don't know (maybe check gnome's file roller).
-- simon
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It all worked well. I recombined the files and the md5sum matched the original. I've been able to create and burn an iso image of each file. Cheers On 03/10/06, Chris O'Halloran <cmoman(a)gmail.com> wrote:
Thanks for that. I'll copy the file, work out the md5sum, split it and then reassemble and check the md5sum.
The split command appears to have some nice switch options.
Cheers
Chris
On 03/10/06, Simon Green <simon(a)simongreen.net> wrote:
On 03/10/06, Chris O'Halloran <cmoman(a)gmail.com> wrote:
Hello,
Hi fellow Committee member :-)
I have a disk image of about 8.4G that I took from a friends computer about 18 months ago. Since then the harddrive has been reformatted and that data lost.
I would like to send disk image via CD's to the UK where the disk image can be reassembled. I imagine that might take about 12-13 CD's
Would people be prepared to offer any hints on how to do that?
For the cost of about 12CDs, you could write the whole file on one dual layer DVD, assuming you have a DVD/DL writer, and they can read the media.
Failing that, the "split" program can split a file into suitable sizes (the -b option specifies the number of bytes per file). Once the file is split, simply copy each file onto a CD. At the other end, you can join the files together, e.g. "cat xaa xab xac > xxxx.dat"
There is probably some nice gui way of doing it, but I don't know (maybe check gnome's file roller).
-- simon
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participants (3)
-
Chris O'Halloran -
Ian McDonald -
Simon Green