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Old 02-21-2013, 12:26 AM   #1
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Registered: Feb 2013
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problem wit triple boot

hi everybody, first time here.

I've read a similar thread on this here but i didn't quite get it so i'm asking here again.

i'm trying to have 3 different OS's on my laptop, the installation method was:

first Windows 7 X86_64,
then fedora 18 X86_64,
and last there was Centos 6.3 X86_64.

after finishing all installation i realized the issue:

the grub.conf file tells the system to give me only the Centos and the windows(under others) on the grub menu.

i am sort of new to the system and would very much like it if someone can give me a link to a guide or just instructions on how to take care of this.

lsblk of the system:

sr0 11:0 1 1024M 0 rom
sda 8:0 0 298.1G 0 disk
├─sda1 8:1 0 101M 0 part
├─sda2 8:2 0 146.5G 0 part
├─sda3 8:3 0 5G 0 part
├─sda4 8:4 0 1K 0 part
├─sda5 8:5 0 512M 0 part
├─sda6 8:6 0 72.3G 0 part
│ ├─fedora-swap (dm-4) 253:4 0 3.9G 0 lvm
│ ├─fedora-home (dm-5) 253:5 0 19.5G 0 lvm
│ └─fedora-root (dm-6) 253:6 0 48.8G 0 lvm /mnt/fedora-root
├─sda7 8:7 0 73.2G 0 part
│ ├─centos-root (dm-0) 253:0 0 19.5G 0 lvm /
│ ├─centos-swap (dm-1) 253:1 0 3.9G 0 lvm [SWAP]
│ ├─centos-storage (dm-2) 253:2 0 30.3G 0 lvm /storage
│ └─centos-home (dm-3) 253:3 0 19.5G 0 lvm /home
└─sda8 8:8 0 503M 0 part /boot

thanks in advance
Old 02-21-2013, 09:33 AM   #2
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Registered: Apr 2008
Distribution: PCLinux, Slackware
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Fedora 18 uses Grub2 and if you have a grub.conf file in CentOS, it means it is using Grub Legacy. So if you can only boot CentOS and windows that would mean you have the CentOS Grub in the master boot record. Boot into CentOS, login as root user and open a text editor and put the following entry in. You will need to change the root line to the partition for Fedora, The entry below shows the first hard drive, 5th partition Grub Legacy counts drives and partitions from zero:

title Fedora-18
root (hd0,4)
kernel /boot/grub/core.img
The #savedefault and #boot lines probably won't be needed. If it fails to boot, delete the hash marks (#) from those two lines and try again. If that fials, go to the site below and read the instructions, download and run the bootinfoscript and post the output, a results.txt file and someone should be able to help.
Old 02-22-2013, 01:46 PM   #3
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Registered: Feb 2013
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hi thanks,

already chainloaded the system it's okay now


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