LinuxQuestions.org - Boot manager backup

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elekt

08-05-2007 10:43 PM

Boot manager backup

Hello:

i have to reinstall my other OS, but i do not wish to lose the boot manager, is there a way to back it up or install it, with out the need to reinstall ubuntu?

thanks in advance

stress_junkie

08-05-2007 10:51 PM

This will put the contents of the Master Boot Record of /dev/hda in a file /hda-mbr.dd.

Code:

dd if=/dev/hda of=/hda-mbr.dd bs=512 count=1 conv=notrunc,noerror

This will restore it.

Code:

dd if=/hda-mbr.dd of=/dev/hda bs=512 count=1 conv=notrunc,noerror

I always perform this MBR backup before I use tar to back up the root partition.

syg00

08-05-2007 11:09 PM

Not worth the trouble IMHO - just as easy to re-install. Given that the partitions may change during an install, "bs=1 count=446" could be better in both commands.

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