[Discuss] How do you backup "/" with rsync?

[John Blomfield]

I've just done a small test with a computer that has a Fedora / 
installation in one partition and a Ubuntu / installation on another 
partition. If you boot with a Fedora Rescue disk it lists the two 
partitions e.g. sda1 and sdb1, and asks if you want it to mount the 
Fedora / on /mnt/sysimage. It won't automatically mount the Ubuntu / so 
just select the "skip" option, which takes to a shell.  Then you can 
manually

#mount /dev/sdb1 /mnt/sysimage
and as below #chroot /mnt/sysimage etc.

John Blomfield


John Blomfield wrote:
> I am not sure if this is what your looking for but I mentioned this 
> before when talking about recovering a damaged MBR.  I am assuming 
> here that you have backed up your /boot directory containing grub onto 
> your external HD along with everything else.  Then you need to 
> recreate the MBR on the external HD, so boot the system with a "Rescue 
> CD" containing the usual Linux utilities, which will find your two 
> Linux installations, one on your internal HD and one on your external 
> HD. Then:
>
> # chroot /mnt/sysimage   - this gives you access to your installation 
> image, this name could be different with different distributions.( 
> Fedora in this case, the Fedora rescue disc works with any distribution)
>
> Then do the following:
>   # login
>    login: root
>   passwd: ******
>   # cd /boot
>   /boot# grub
>   grub > find /boot/grub/stage1
>   "response will be something like " (hd0, 0) (hd1, 0)
>   -what this tells you is that stage1 of grub has been found in two 
> partitions, one of which is the partition (hd0, 0) or sda1 your 
> internal HD, and the other partition (hd1, 0) or sdb1 your external 
> HD.  Now type, ( note the > is the Grub prompt)
>    > root (hd1, 0)
>   > setup (hd1)
>   > quit
>
> This will make your external HD bootable with a grub menu, as well as 
> your internal HD.  Now all you have to do is to change the BIOS to 
> choose which one you want to boot from.
>
> John Blomfield
>
>
>
>
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