Share your knowledge at the LQ Wiki.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 12-29-2003, 02:49 PM   #1
Registered: Jun 2003
Location: Brussels, Belgium
Distribution: Ubuntu 6.10
Posts: 139

Rep: Reputation: 15
3 os on the same PC


I have XP and Red Hat 9.0 already installed on my PC.
I would like to install Mandrake 9.2 on the same PC and be able to choose on which OS I want to boot with Grub.
Are there any specific points I have to take care about? Can I share some partitions (for example the /boot) ?
Thanks in advance for your help,
Old 12-29-2003, 03:06 PM   #2
Senior Member
Registered: Jun 2003
Distribution: Mint 13/15, CentOS 6.4
Posts: 2,020

Rep: Reputation: 47
i'm not sure i would share /boot, but i guess if you took the right precautions you could. sounds like more trouble than it's worth to me, however. i would definitely share /swap, and possibly /home. i definitely wouldn't share /etc or the rest of the system directories -- /usr, lib, /var, etc. maybe you can share some of those safely, i don't know, i'm just saying i wouldn't do it.
Old 12-29-2003, 10:24 PM   #3
Senior Member
Registered: Feb 2003
Location: Calif, USA
Distribution: PCLINUXOS
Posts: 2,894

Rep: Reputation: 90
I go for the easy share swap and install each distro completely to it's own root.
I vary from this with server or real multi user configurations.
Old 12-30-2003, 03:26 AM   #4
Registered: Jun 2003
Location: Brussels, Belgium
Distribution: Ubuntu 6.10
Posts: 139

Original Poster
Rep: Reputation: 15
2damncommon, synaptical,

I have in fact installed the 2 distros separately, without sharing any partition. I stil can run Windows and the last installed Linux (Mandrake) but can not run the Red Hat anymore (it was the second os installed and the first Linux).
It looks that the MBR has been overwritten but partition are still there (I can still read them via ext2fs on windows) and that everything related to my Red Hat partition has been overwritten.
I still have the grub.conf (from Red Hat). How do I have to update the menu.lst in Mandrake in order to be able to boot also on Red Hat.
Thanks in advance for your help,
Old 12-30-2003, 04:15 AM   #5
Registered: Nov 2003
Location: BC, Canada
Distribution: Slackware 11.0
Posts: 30

Rep: Reputation: 15
You just need to reference the Redhat partition in grub.conf or menu.lst.

The entry is something like:

title "whatever you want to have appear on the menu"
root "where grub finds /boot/grub, so make it the same as the mandrake entry"
kernel "where grub can find the Redhat kernel. Paste in the line from the redhat version of grub.conf"

I seem to recall that Redhat might have had an additional line for the kernel info, but I don't have that with Slackware. If there is another line, just paste it into the new grub.conf/menu.lst.

I did this when migrating my box from Redhat to Slackware, so it should work. In my case, I added Slack to Redhat's grub, rebooted to Slack, re-installed grub from Slack and changed the MBR, added Redhat to Slack's grub setup, cleanup my files etc. and then removed Redhat and its grub entries.

Hope this helps...


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 03:38 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration