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Take Backp of MBR Print E-mail
MBR is in the first 446 bytes of the Hard Drive
The next 66 bytes consists of the partiton table

to take backup of the MBR to a file /root/hda_mbr

dd  if=/dev/hda  of=/root/hda_mbr  bs=446  count=1

to replace with the backed up MBR,In case ypu deleted the MBR

dd  if=/root/hda_mbr  of=/dev/hda  bs=446  count=1

bs=byte size

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