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Hello.

Before you go on, if you may know how to do what I need to do, with
grub, then do read on because I am sure that it should be possible with
grub too.

I want to make a machine boot from a hard disk that already has a linux
install on it. I basically need to reinstall lilo to the mbr, using the
files from /mnt/hda1/boot (chain.b, boot.0300 & boot.b) and
/mnt/hda2/etc/lilo.conf.

If anyone can tell me how, please do so asap!!! I would be very
grateful.

Here is my lilo.conf:

root@ttyp0[/mnt/hda2/etc]# cat lilo.conf
delay=40
append="panic=20"
boot=/dev/hda1
map=/boot/map
install=/boot/boot.b
#prompt
#timeout=50
message=/boot/message
linear
default=linux

image=/boot/vmlinuz-2.2.16-22smp
label=linux-mp
read-only
root=/dev/hda4
append="hdc=ide-scsi"

image=/boot/vmlinuz-2.2.16-22
label=linux
read-only
root=/dev/hda4
append="hdc=ide-scsi"


I copied 2 partitions off the drive as I through that the machine would
no longer be needed as a RH7 server, and put FC2 on it.

I now find out that the machine is needed in bootable state (quickly!).
I have copied the two images of the partition back on to the drive -
hda1 which I have as /boot/ and hda2 which I have the rest of the old
system on.

I am using the knoppix live CD.

If someone can help me with this I would most grateful!

Thanks,
Tom Jermy

root@ttyp0[hda1]# ls
System.map kernel.h-2.4.0 os2_d.b
System.map-2.2.16-22 lost+found vmlinux-2.2.16-22
System.map-2.2.16-22smp map vmlinux-2.2.16-22smp
boot.0300 message vmlinuz
boot.b module-info vmlinuz-2.2.16-22
chain.b module-info-2.2.16-22 vmlinuz-2.2.16-22smp
kernel.h module-info-2.2.16-22smp

root@ttyp0[hda2]# ls
bin dev fsckoptions home loadconfig.sh lost+found opt root
tmp usr
boot etc getdomain lib loadrc.sh mnt proc sbin
todo var

root@ttyp0[hda2]# uname -a
Linux Knoppix 2.4.27 #2 SMP Mo Aug 9 00:39:37 CEST 2004 i686 GNU/Linux

root@ttyp0[/mnt/hda2/etc]# cat redhat-release
Red Hat Linux release 7.0 (Guinness)

tomjermy@gmail.com wrote:
> Hello.
>
> Before you go on, if you may know how to do what I need to do, with
> grub, then do read on because I am sure that it should be possible with
> grub too.
>
> I want to make a machine boot from a hard disk that already has a linux
> install on it. I basically need to reinstall lilo to the mbr, using the
> files from /mnt/hda1/boot (chain.b, boot.0300 & boot.b) and
> /mnt/hda2/etc/lilo.conf.
>
> If anyone can tell me how, please do so asap!!! I would be very
> grateful.
>
> Here is my lilo.conf:
>
> root@ttyp0[/mnt/hda2/etc]# cat lilo.conf
> delay=40
> append="panic=20"
> boot=/dev/hda1
> map=/boot/map
> install=/boot/boot.b
> #prompt
> #timeout=50
> message=/boot/message
> linear
> default=linux
>
> image=/boot/vmlinuz-2.2.16-22smp
> label=linux-mp
> read-only
> root=/dev/hda4
> append="hdc=ide-scsi"
>
> image=/boot/vmlinuz-2.2.16-22
> label=linux
> read-only
> root=/dev/hda4
> append="hdc=ide-scsi"
> ...

I believe /dev/hda4 is always going to be *the* extended partition,
unless its the last physical partition. If its created as the extended
partition, then you need to have the root partition on either a
primary or a logical partition.

You might try 'fdisk -l /dev/hda' to see what you actually have.

In comp.os.linux.misc tomjermy@gmail.com wrote:
> I want to make a machine boot from a hard disk that already has a linux
> install on it. I basically need to reinstall lilo to the mbr, using the
> files from /mnt/hda1/boot (chain.b, boot.0300 & boot.b) and
> /mnt/hda2/etc/lilo.conf.

well what's the problem with

mount -o bind /mnt/hda1/boot /mnt/hda2/boot
lilo -r /mnt/hda2

??

Or other combos. For example

cp /mnt/hda2/etc/lilo.conf /mnt/hda2/etc/lilo.conf.2
lilo -r /mnt/hda1 -C /etc/liloconf.2

???

> If anyone can tell me how, please do so asap!!! I would be very
> grateful.

Why should you need advice? What is there that is not obvious?


Peter