CentOS, Fedora & RedHat in 1 box Post: 302086417

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Operating Systems Linux Ubuntu CentOS, Fedora & RedHat in 1 box Post 302086417 by Corona688 on Wednesday 23rd of August 2006 08:08:43 PM

08-23-2006

Registered User

Yes, I don't see why not. As for how the partitions would be laid out, that depends on...how you want your partitions laid out.

The bare minimum, as I see it:

/dev/hda1 -- 200mb of ext2 to hold kernels and grub settings.
/dev/hda2 -- 512mb, swap space. They can all use the same swap.
/dev/hda3 -- A couple gigs of ext3 for common space. Mount it on something like /opt/shared for all three distros, so you can dump a file there in one distro, reboot into another distro, and still have that file.
/dev/hda4 -- All remaining space, as an extended partition.
/dev/hda5 -- First partition in extended partition. Holds root partition for Distro #1.
/dev/hda6 -- Second partition in extended partition. Holds root partition for Distro #2.
/dev/hda7 -- Third partition in extended partition. Holds root partition for Distro #3.

grub.conf for this monster is going to look something like:

Code:

title=Centos
kernel (hd0,0)/centos/kernel-2.6.12-r10 root=/dev/hda5

title=Fedora
kernel (hd0,0)/centos/kernel-2.6.12-r10 root=/dev/hda6

title=Redhat
kernel (hd0,0)/centos/kernel-2.6.12-r10 root=/dev/hda7

Even better would be three seperate boot partitions, one for each distro, but that'd mean booting from an extended partition, and I'm not sure how much grub likes that.

Finding a guide for this is unlikely imho, as it'd have to be written by someone who's mastered the same versions of all three distros of interest. You're going to have fun getting all of them to install where you want them.

Of course, if you're going to want multiple boot partitions for each and every distro, things are going to get more complicated.

Corona688

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LEARN ABOUT DEBIAN

hd

HD(4)							     Linux Programmer's Manual							     HD(4)

NAME

       hd - MFM/IDE hard disk devices

DESCRIPTION

       The  hd*  devices  are block devices to access MFM/IDE hard disk drives in raw mode.  The master drive on the primary IDE controller (major
       device number 3) is hda; the slave drive is hdb.  The master drive of the second controller (major device number 22) is hdc and	the  slave
       hdd.

       General	IDE block device names have the form hdX, or hdXP, where X is a letter denoting the physical drive, and P is a number denoting the
       partition on that physical drive.  The first form, hdX, is used to address the whole drive.  Partition numbers are assigned  in	the  order
       the  partitions	are  discovered,  and only nonempty, nonextended partitions get a number.  However, partition numbers 1-4 are given to the
       four partitions described in the MBR (the "primary" partitions), regardless of whether they are unused or extended.  Thus, the first  logi-
       cal  partition  will be hdX5.  Both DOS-type partitioning and BSD-disklabel partitioning are supported.	You can have at most 63 partitions
       on an IDE disk.

       For example, /dev/hda refers to all of the first IDE drive in the system; and /dev/hdb3 refers to the third DOS "primary" partition on  the
       second one.

       They are typically created by:

	      mknod -m 660 /dev/hda b 3 0
	      mknod -m 660 /dev/hda1 b 3 1
	      mknod -m 660 /dev/hda2 b 3 2
	      ...
	      mknod -m 660 /dev/hda8 b 3 8
	      mknod -m 660 /dev/hdb b 3 64
	      mknod -m 660 /dev/hdb1 b 3 65
	      mknod -m 660 /dev/hdb2 b 3 66
	      ...
	      mknod -m 660 /dev/hdb8 b 3 72
	      chown root:disk /dev/hd*

FILES

       /dev/hd*

SEE ALSO

       chown(1), mknod(1), sd(4), mount(8)

COLOPHON

       This  page is part of release 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    1992-12-17								     HD(4)