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Full Discussion: Install more than one OS in a single partition...
Operating Systems Linux Slackware Install more than one OS in a single partition... Post 302160582 by niterobin on Tuesday 22nd of January 2008 06:41:02 AM
Old 01-22-2008
My thought is that it depends on the file system. If both operating systems use the same file system and one of them has dual boot capabilties, then it's possible. The only example I know of this was OS/2 and MS-DOS/Windows, if the partition was formatted as FAT16.

I'm not sure it would be possible with Unixes, as I don't know very much about the file systems concerned. I personally run Slackware, which is formatted as EXT2, and also WINXP, which uses NTFS formatting for its partition. Because the formatting of the file systems are different, it isn't possible, as far as I know, to install both of the operating systems on the same partition. And, even if it was, then you'd need a boot loader to switch between each of the operating systems. If one doesn't exist, then you'd have to write it yourself - and I *really* don't have a clue as to how to go about doing that.

If you're trying to install a second operating system without losing data from the first one, then maybe Gparted would be useful to you. It runs from a bootable CD, and enables you to resize a partition to free up disk space and to create new partitions outside the existing one. The homepage for it is here: GParted -- LiveCD

Some caveats: back up your existing partition before you use Gparted. I used it with no problems, but it's always best to err on the safe side. And, if you're installing a form of Linux, you'll need *two* partitions, a bigger one for the Linux installation, and a smaller one to use as the swap partition.

HTH.
 

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LEARN ABOUT CENTOS

systemd-gpt-auto-generator

SYSTEMD-GPT-AUTO-GENERATOR(8)				    systemd-gpt-auto-generator				     SYSTEMD-GPT-AUTO-GENERATOR(8)

NAME

       systemd-gpt-auto-generator - Generator for automatically discovering and mounting /home as well as discovering and enabling swap
       partitions, based on GPT partition type GUIDs.

SYNOPSIS

       /usr/lib/systemd/system-generators/systemd-gpt-auto-generator

DESCRIPTION

       systemd-gpt-auto-generator is a generator that automatically discovers /home and swap partitions and creates mount and swap units for them,
       based on the the partition type GUIDs of GUID partition tables (GPT). Note that this generator will execute no operation on non-GPT
       systems, on systems where the units are explicitly configured (for example, listed in fstab(5)) or where the mount point is non-empty.

       This generator will only look for partitions on the same physical disk the root file system is stored on. This generator has no effect on
       systems where the root file system is distributed on multiple disks, for example via btrfs RAID.

       This generator is useful for centralizing file system configuration in the partition table and making manual configuration in /etc/fstab or
       suchlike unnecessary.

       This generator looks for swap partitions using GPT type 0657fd6d-a4ab-43c4-84e50933c84b4f4f. It looks for /home partitions using GPT type
       933ac7e1-2eb4-4f13-b8440e14e2aef915.

       systemd-gpt-auto-generator implements the generator specification[1].

SEE ALSO

       systemd(1), systemd.mount(5), systemd.swap(5), systemd-efi-boot-generator(8), fstab(5)

NOTES

	1. generator specification
	   http://www.freedesktop.org/wiki/Software/systemd/Generators

systemd 208													     SYSTEMD-GPT-AUTO-GENERATOR(8)
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