Author Topic: Creating a multiboot system  (Read 10369 times)

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Offline pooky2483

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Creating a multiboot system
« on: September 02, 2013, 12:02:24 am »
I've decided to go for  a multi boot system.
Ubuntu/Kubuntu and Arch (manjaro. Version undecided).
What would be the ideal size Hd to install? I've got a 250Gb and a 500Gb Hd, I'm thinking the 500Gb one as I'm thinking of installing everything (as in the '.lib' file) that can be for each distro!

How would I go about starting? Obviously from scratch with the Hd set as the first one to boot, then.....
« Last Edit: September 13, 2013, 02:08:00 pm by pooky2483 »

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Offline Mark Greaves (PCNetSpec)

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Re: Creating a multiboot system
« Reply #1 on: September 02, 2013, 12:51:51 am »
which drive is up to you ;)

Quote
I'm thinking of installing everything (as in the '.lib' file) that can be for each distro!

Not sure what you mean by that ?

Quote
How would I go about starting? Obviously from scratch with the Hd set as the first one to boot, then.....

Again, not 100% sure what you're asking .. personally I'd settle on a partitioning scheme and create the partitions prior to installation .. or at least I'd create one primary partition (for one distro) and create an empty extended partition containing the rest of the drive, so the installers for the second and third OS's are forced to create logical partitions within the extended one.

Other people would partition differently .. and if you ever plan on installing Windows as well, so would I :)
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Offline pooky2483

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Re: Creating a multiboot system
« Reply #2 on: September 02, 2013, 01:59:09 am »
which drive is up to you ;)

Quote
I'm thinking of installing everything (as in the '.lib' file) that can be for each distro!

Not sure what you mean by that ?

I can't think of how to explain it so I'll post a quote from you...
From thread 'I Want to know more about Dolphin'
KDE is a desktop environment in the same way Gnome, Xfce, LXDE, etc. are.

If you want the full integration of dolphin into the desktop .. it needs to be run in KDE.

I'm in NO way advising you to install KDE in Ubuntu .. it will pull in a TON of dependencies .. if you wanna try it out, best to get a LiveCD/LiveUSB of a distro that uses KDE4 by efault, such as Kubuntu (which will use Dolphin as the default file manager anyway).

Personally I can't stand Dolphin, or KDE4 .. but that's just me ;)

--

How would I go about starting? Obviously from scratch with the Hd set as the first one to boot, then.....

Quote
Again, not 100% sure what you're asking .. personally I'd settle on a partitioning scheme and create the partitions prior to installation .. or at least I'd create one primary partition (for one distro) and create an empty extended partition containing the rest of the drive, so the installers for the second and third OS's are forced to create logical partitions within the extended one.

Other people would partition differently .. and if you ever plan on installing Windows as well, so would I :)

I mean partitioning the drive, equally for each distro. I don't want to install Window$ as it's already on a laptop we have.

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Offline Mark Greaves (PCNetSpec)

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Re: Creating a multiboot system
« Reply #3 on: September 02, 2013, 12:54:15 pm »
As I've covered before, a HDD can only have 4 "primary" partitions, but one (or more) can be an "extended" partition .. an extended partition can contain any number of "logical" partitions .. unlike the Windows bootloader GRUB isn't fussy about stage 2 of its bootloader being in logical partitions.

So for the 3 Linux OS's you're going to require a minimum of 4 partitions (3x / and at least one swap partition), so if you used all primaries, there's be NO scope for adding further OS's in the future.

I'd bung the OS whos bootloder you're going to use in a primary partition .. then create a large extended partition for everything else to go in.

So lets say you're using the 250GB drive and want a 4GB swap partition that'll be shared by all Linux OS's ..

3x82=246

So you'll want roughly an 80GB primary partition for one OS

In the remainder of the drive create an extended partition using all available space.

inside the extended partition create your 4GB (logical) swap partition

then divide the remaining space inside the extended partition in half for two more logical partitions (for the other OS's)

Does that make sense ?
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Offline pooky2483

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Re: Creating a multiboot system
« Reply #4 on: September 02, 2013, 01:49:23 pm »
Not really but I've had a look at my existing boot drive and see that there's a 2.9Gb partition at the end of the drive.
I can't quite figure how you're working out the numbers?
I am thinking of using the 500Gb Hd.
So, the 4Gb you say to allocate would be double at 8Gb and then divide by 3 or 4 the remaining space for the other Os's I want to install.

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Offline Mark Greaves (PCNetSpec)

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Re: Creating a multiboot system
« Reply #5 on: September 02, 2013, 02:12:32 pm »
No need to double the size of the swap file .. 4GB should be plenty unless you have a TON of RAM and plan on using hibernate.

So yeh, 500 - 4 = 496.3

496 / 3 = 165

but remember, a formatted 500GB drive won't have 500GB available (more like 470 - 480) .. so make the first primary partition about 160GB

in the rest of the space create a single large extended partition.

inside the extended partition create a 4GB logical partition for swap

and 2 more logical partitions that split the remaining space (in the extended partition) in half

That way you'll end up with 3 x roughly 160GB partitions for the OS's, and a 4GB swap partition
« Last Edit: September 02, 2013, 02:14:41 pm by Mark Greaves (PCNetSpec) »
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Offline pooky2483

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Re: Creating a multiboot system
« Reply #6 on: September 02, 2013, 03:45:18 pm »
Strange you say that, I've recently upgraded my RAM to 8Gb and the system says I have 7.8Gb useable.
Quite confusing but I'll try and figure it out...

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Offline pooky2483

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Re: Creating a multiboot system
« Reply #7 on: September 02, 2013, 09:58:41 pm »
I am trying to unmount the 500Gb Hd but for some reason it wont unmount.
I've tried using GParted and Disk Utility but neither of them will unmount the drive?

[EDIT]
There's nothing using the drive either.

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Offline SeZo

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Re: Creating a multiboot system
« Reply #8 on: September 02, 2013, 10:26:43 pm »
Are you certain it is the right drive?

Offline pooky2483

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Re: Creating a multiboot system
« Reply #9 on: September 02, 2013, 10:54:18 pm »

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Offline Mark Greaves (PCNetSpec)

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Re: Creating a multiboot system
« Reply #10 on: September 02, 2013, 11:44:19 pm »
So what happens if you close all file manager windows, and disk utility .. open a terminal and run:
Code: [Select]
sudo umount -f /dev/sdc1
then reopen disk utility .. is it unmounted ?
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Offline pooky2483

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Re: Creating a multiboot system
« Reply #11 on: September 02, 2013, 11:59:04 pm »
Yep, that worked  :)
Now how do I use Disk Utility to create the partitions or is GParted easier to do it?
How do I do it as to me it's complicated and I can't figure it out.

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Offline Mark Greaves (PCNetSpec)

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Re: Creating a multiboot system
« Reply #12 on: September 03, 2013, 12:33:06 am »
Gparted may be eaiser.
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Offline pooky2483

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Re: Creating a multiboot system
« Reply #13 on: September 03, 2013, 01:52:40 am »
Is this any good?
http://img534.imageshack.us/img534/9254/l2gc.png
How do I get it to show the little key symbol and how do I get rid of the little bit at the front of each one where it's a yellowy colour?

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Offline Mark Greaves (PCNetSpec)

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Re: Creating a multiboot system
« Reply #14 on: September 03, 2013, 09:35:19 am »
Dunno .. that may work with GPT as I gather you can have more than 4 primary partitions with GPT
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