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I have two Linux OS system currently installed on their own separate partitions with my Grub set up, but I want to add a third on it's own partition as well, without messing with my current GRUB set up, how would I install it so I don't have to redo my GRUB set up, and will the third Linux OS just add itself on it's own to my current GRUB? I'm using GRUB 1.99 something...

current set up

Primary Partitons:

 - BackTrack 5 R2     /dev/sda1
 - Ubuntu 12.04 LTS   /dev/sda2

Extended Partition:

 - Unallocated Space
 - Shared Storage ext4 formatted
 - Swap shared Partition
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What are your current OS's, and what OS are you adding? – Mitch Jul 24 '12 at 7:15
The current OS's are those in the primary partitions sda1 and sda2 the third I plan to install in the extended partitions unallocated space will be CentOS, all three will be sharing the same Swap space but when I installed my second OS it set up it's own grub with the newest OS as primary, what I want to do is install CentOS and not have it overwrite my current GRUB settings and just add itself in automagically if possible, without having to boot my primary OS and rewriting the grub again – Fate Jul 24 '12 at 7:24
The installer of CentOS should let you choose where to install GRUB. Select something other then the MBR (CentOS partition would be a good candidate), and you are goo to go. In case you are not sure where to look for that option, ask at the CentOS forums. – mikewhatever Jul 24 '12 at 10:29
This question would be better fit for our fellow Stack Exchange site - Unix & Linux. There are similar questions already - so this would not be appropriate to migrate. – fossfreedom♦ Jul 24 '12 at 10:32

closed as too localized by mikewhatever, fossfreedom♦ Jul 24 '12 at 10:32

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