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dd
duplication, imaging, transferral & restorationVerify installed version by using the command-line interface:
# dd --version
Usage:
dd --help
WARNING: YOU MUST KNOW WHAT YOU ARE DOING OTHERWISE ALL YOUR DATA MAY BE DESTROYED
Some dd operations require the drive to be dismounted beforehand (a LiveDVD, or USB, is useful in this case)
Duplication & Imaging
Creating a duplicate partition (sdb1) of sda1 partition (where the target partition must be greater in capacity):
dd bs=4096 conv=noerror if=/dev/sda1 of=/dev/sdb1
Creating a compressed, duplicate image file of the sda1 partition:
dd bs=4096 conv=noerror if=/dev/sda1 | gzip -fv9 > sda1partition.img.gz
http://www.zdnetasia.com/drive-and-partition-backups-with-dd-62203014.htm
http://www.linuxquestions.org/questions/linux-newbie-8/learn-the-dd-command-362506/
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