booting a cloned disk

Anthony Hologounis anthony@penguinnetworking.com
Tue, 6 Feb 2001 18:25:04 -0700


Cool

Your helping out der hans...there must be some points being scored here

On Monday 05 February 2001 21:57, you wrote:
> There are a couple of parameters to add to the lilo.conf for the
> clone/target disk to be recognized as /dev/hda, and installing it is easier
> with chroot. Here's how I install lilo on LFS disks that I build.
>
> The target disk is /dev/hdb.  I mount the root partition on $LFS
> (/mnt/lfs).
>
> This is how my $LFS/etc/lilo.conf file looks:
>
> boot=/dev/hdb  		#This will write to the MBR of the target
> install=/boot/boot.b	#$LFS/boot
> disk=/dev/hdb		#This will cause the system bios
>         bios=0x80		# to recognize the drive as hda
> prompt
> timeout=50
> linear
> default=lfs
>
> image=/boot/lfskernel	#$LFS/boot
>         label=lfs
>         root=/dev/hda1	#hda1 at boot time
>         read-only
>
> Then I cd into $LFS, do a 'chroot $LFS bash' and then run lilo without any
> parameters.  After that, I can dismount the disk, move it into the /dev/hda
> position and it will boot normally.  After the system is up, I change the
> boot parameter to /dev/hda.  I also remove the disk and bios line, though
> I'm not sure that is necessary.  That part can be easily scripted in an of
> several ways before the reboot.  I'll have to add that.  :^)
>
>
> Larry
>
> On Monday 05 February 2001 19:35, you wrote:
> > moin, moin,
> >
> > I'm building quite a few boxen on the same hardware, so have setup a
> > cloning system.
> >
> > sfdisk makes regenning the partition table a sinch and copying the
> > filesystem over is also easy.
> >
> > The thing I haven't figured out, though, is how to setup the mbr. I don't
> > see a way, with lilo, to write the mbr to another drive. I guess I could
> > setup RAID 1 and let that do it, but I'm not wanting to right now :). I
> > thought of dding the first 512 bytes over, but that presumes the kernels
> > are in the exact same places on the disks, which I can't guarantee with
> > the methods I'm currently using. I think I can do this with grub since
> > it's actually reading the fs, but would prefer to stick with lilo for now
> > as that's what the others who would be using this understand.
> >
> > Currently I boot an install CD into rescue mode, mount the drive and run
> > lilo with the -r option.
> >
> > ciao,
> >
> > der.hans
>
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-- 




     

 ---Anthony Hologounis---
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