--- On Mon, 9/1/08, Sadaruwan Samaraweera slinuxworld@gmail.com wrote:
From: Sadaruwan Samaraweera slinuxworld@gmail.com Subject: Re: [CentOS] I need help with GRUB To: "CentOS mailing list" centos@centos.org Date: Monday, September 1, 2008, 9:36 PM On Tue, Sep 2, 2008 at 4:14 AM, Al Sparks data345@yahoo.com wrote:
--- On Mon, 9/1/08, Lanny Marcus
lmmailinglists@gmail.com wrote:
From: Lanny Marcus
Subject: Re: [CentOS] I need help with GRUB To: "CentOS mailing list"
Date: Monday, September 1, 2008, 9:53 AM On Sun, Aug 31, 2008 at 11:31 PM, Sadaruwan
Samaraweera
slinuxworld@gmail.com wrote:>
On Mon, Sep 1, 2008 at 9:55 AM, Ian Forde
ian@duckland.org wrote:
On Mon, 2008-09-01 at 09:47 +0530,
Sadaruwan
Samaraweera wrote:
Hello,
And the problem that I'm
having is
with my two Linux distros. Ive
installed CentOS & Windows in
my SATA HDD
and I've used my complete
40GB PATA HDD for Ubuntu. Well all
OS's
work fine with out any
problems but when I want to boot
into CentOS
I've to select the SATA
as my booting HDD from the BIOS if
I want to
go to Ubuntu the I've to
select my PATA as the default HDD
from the
menu. So what I want to do
is I need to add Both distros in to
one GRUB
boot loader and the other
thing is that both grubs that
I've on
both HDD s only detects the
windows Partition not the Linux
partion. So I
need to to know how to
add bothe Linux versions I've
into one
GRUB. I want to use the SATA
HDD as my default HDD.
You'll want to merge the grub boot
stanzas
into one file, apply it to
one (or both) of the drives, and keep it
in sync
when you do kernel
updates (because those affect the grub
menu)...
This way, you won't have
to change the BIOS setting.
OK, thx for the quick reply but I realy
don't know
how to do that can any
one help on that note.
Possibly what you need to do is add another entry
in your
/etc/grub.conf file, on the HD you boot from.
Below is
mine.
[lanny@dell2400 ~]$ sudo cat /etc/grub.conf Password: # grub.conf generated by anaconda # # Note that you do not have to rerun grub after
making
changes to this file # NOTICE: You have a /boot partition. This
means that
# all kernel and initrd paths are
relative to
/boot/, eg. # root (hd0,2) # kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00 # initrd /initrd-version.img #boot=/dev/hda default=0 timeout=5 splashimage=(hd0,2)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-92.1.10.el5) root (hd0,2) kernel /vmlinuz-2.6.18-92.1.10.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet initrd /initrd-2.6.18-92.1.10.el5.img
acpi=off
title CentOS (2.6.18-92.1.6.el5) root (hd0,2) kernel /vmlinuz-2.6.18-92.1.6.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet initrd /initrd-2.6.18-92.1.6.el5.img
acpi=off
title CentOS (2.6.18-92.1.1.el5) root (hd0,2) kernel /vmlinuz-2.6.18-92.1.1.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet initrd /initrd-2.6.18-92.1.1.el5.img
acpi=off
title Windows XP rootnoverify (hd0,0) chainloader +1 [lanny@dell2400 ~]$ _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
It's handy that someone posted their grub file.
The answer to your question/situation might be
complicated by the fact that
you use you have been changing your boot up disk in
your BIOS.
But the thing to look for in your grub.conf file is:
title CentOS (2.6.18-92.1.1.el5) root (hd0,2) kernel /vmlinuz-2.6.18-92.1.1.el5 ro
Note that this example includes an entry for a hard
drive:
root (hd0,2)That entry points to the "first" hard drive,
third partition. If you
have 2 hard drives, and you wanted to boot off the
"second" drive
first partition, you might use: root (hd1,0)
You basically want to look at the grub configuration
for each OS on
each hard drive you installed it on, and in
consolidating them, "cut
and paste" entries from what you want to be your
secondary drive to
your primary boot drive.
Again, this is only using the above grub.conf as an
example. If you
have SCSI hard drives instead then probably the
grub.conf will show
something like: root (sd0,2)
So it's important to look at your grub.conf and
make modifications.
Hope this helps. If you want more specific advice,
then post BOTH
grub.conf files, and tell us which one will be from
what you want to
be your secondary drive, and what you want to be your
primary drive
(in BIOS). === Al _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
-- Sadaruwan Samaraweera
Hi,
Thank you very much for responding for my plea forhelp and after some painful hours of search and going through some forums I got what I want and it's working now here is my grub.conf on the SATA drive which I wanted to be my primary booting drive.
# grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,6) # kernel /vmlinuz-version ro root=/dev/VL1/LogVol00 # initrd /initrd-version.img #boot=/dev/sda default=0 timeout=5 splashimage=(hd0,6)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-92.1.10.el5) root (hd0,6) kernel /vmlinuz-2.6.18-92.1.10.el5 ro root=/dev/VL1/LogVol00 rhgb quiet initrd /initrd-2.6.18-92.1.10.el5.img title CentOS (2.6.18-92.el5) root (hd0,6) kernel /vmlinuz-2.6.18-92.el5 ro root=/dev/VL1/LogVol00 rhgb quiet initr /initrd-2.6.18-92.el5.img title Ubuntu rootnoverify (hd1,0) chainloader +1 title WindowsXP SP2 rootnoverify (hd0,0) chainloader +1
If there's anything wrong with this please let me know.
Regards Sadaruwan Samaraweera _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
If it works, great. I see that you do reference "hd1" on one of your boot choices. === Al