Backup your MBR on Linux

/ Published in: Bash
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About the dd command:

dd if= of= bs=("USUALLY" some power of 2, not less than 512 bytes(ie, 512, 1024, 2048, 4096, 8192, 16384[/b], but can be ANY reasonable number.) skip= seek= conv=.

Source is the data being read. Target is where the data gets written.

Warning!! If you reverse the source and target, you can wipe out a lot of data. This feature has inspired the nickname "dd" Data Destroyer.
Warning!! Caution should be observed when using dd to duplicate encrypted partitions.

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  1. # Use this command to backup your MBR:
  3. dd if=/dev/hda of=/home/hda.boot.mbr bs=512 count=1
  5. #To restore the MBR (from a Live CD), use this command:
  7. dd if=/mnt/hda1/home/hda.boot.mbr of=/dev/hda bs=512 count=1


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