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Old 06-02-2006, 02:22 PM   #1
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Dual boot with Grub already installed


I am thinking about creating a dual boot system of two Linux distro's on a system that previously dual booted Win2000 and Ubuntu. Win2000 has not booted since I changed some hardware and I never used it anyhow .

Ubuntu is on a larger slave HDD and Win2000 is on a smaller (2.5 GB) master HDD. Is there anything I should know about installing another linux system on the master drive so I can avoid the Grub 16/17 etc. errors?

I'm thinking about Slackware or Mepis at the moment.
Old 06-02-2006, 02:42 PM   #2
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The last link of my signature has all the answers you require but you may need to know the principle behind.

Perhaps the easiest is to the following

(1) Install other Linux is a single partition per distro so that the root is simply its partition name. Like install Mepis in /dev/hda7 and Slackware in /dev/hda8

(2) During every Linux install instruct its install to install its boot loader in its root partition.

(3) Amend the Grub controlling the MBR as follow
code]title Mepis in /dev/hda7
root (hd0,6)
chainloader +1

title Slackware in /dev/hda8
root (hd0,7)
chainloader +1[/code]
Grub counts from 0 so (hd0,6) means first disk partition 7 corresponding to hda7. If your second disk is hdb and you want to boot hdb12 the root to Grub should be (hd1,10).

The above works for as many Linux as you can put inside a PC.

Small print : Some distros may not have been written to cope with partition number higher than 20 or in a hard disk space beyond 137Gb. Other than that sky is the limit as manay as systems you can boot.


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