Copy MBR record from /dev/sda to /dev/sdb in raid1?

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Asked by: friending
Published on: 13:20/13.01.2009
Status: OPEN

Hi, I have running software raid1 on linux(debian). My harddrives are clean and in healthy state. The problem is that the drive /dev/sdb does not have the correct MBR record and thus is not bootable. Can I copy master boot record from drive /dev/sda to drive /dev/sdb ? What command should I use?

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Answer by: xpert
Posted on: 12:20/13.01.2009
Rating: 3 from possible 5 with 2 votes

Hi,
Well if hard drives has the same bytes and same partitions you can run this command to copy master boot record from sda to sdb:


dd if=/dev/sda of=/dev/sdb bs=512 count=1

Above command will copy first 512 bytes (MBR) from /dev/sda to /sdb/sdb disk.

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