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Old 03-08-2003, 02:37 PM   #1
Fingel
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Registered: Feb 2003
Location: 127.0.0.1
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changing from LILO to GRUB


Hi,
I recently installed debain onto my system, along with RH8 and WinXP. The debain install set LILO as the default bootloader, but so far it dosn't recognize RH8. I was wondering if there was an easy way to set the bootloader back to GRUB, so that maybe it will see RH again(if it dosnt see Debian, thats ok, I'm having problems anyway and booting from floppy wont be horrible.) Is it a simple thing to switch them or is it really difficult?
 
Old 03-08-2003, 05:44 PM   #2
markus1982
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It's quite easy. I'll give you a quick and dirty guide (for more information please consult the man pages):

apt-get install grub
cp -pr /usr/lib/grub/i386-pc /boot/grub
touch /boot/grub/menu.lst
chmod 640 /boot/grub/menu.lst
grub --no-floppy


Now you are at the grub prompt (takes a while):
find /boot/grub/stage1
root (hd0,7)
setup (hd0)
quit


This should get you set ... almost. You now just need
to customize your /boot/grub/menu.lst file (/etc/grub.conf
in RedHat).


A single boot solution could look like this:
color light-gray/blue yellow/brown
default 3
fallback 0
password --md5 XXX
timeout 5


title Debian/GNU Linux 3.0r1 (stable)
root (hd0,7)
kernel (hd0,7)/boot/vmlinuz-2.4.18-bf2.4 root=/dev/hda8
 
Old 03-08-2003, 06:09 PM   #3
Fingel
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I already have grub installed, its just a matter of changing the default one, or if thats what you already told me to do...I'm not sure...
 
Old 03-09-2003, 08:48 PM   #4
Fingel
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I found out that there is a tool called grub-install, but I'm confused about the syntax.
Usage: grub-install [OPTION] install_device
Install GRUB on your drive

-h, --h print out this message and exit.
-v, --version Print version info and exit
--root-directory=DIR install GRUB images under the directory DIR instead of the root directory
--grub-shell=FILE use FILE as the grub shell
--force-lba force GRUB to use LBA mode even for a buggy BIOS
--recheck probe a device map even if it already exists

INSTALL_DEVICE can be a GRUB device name or a system device filename.

I think I kind of understand, would I type something along the lines of --root-directory=MBR?
I know it has to be in the master boot record, but im not sure how to enter that.
 
Old 03-09-2003, 11:18 PM   #5
Fingel
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it was as easy as /sbin/grub-install /dev/hda
why didnt anyone say so?
 
  


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