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Thread: Create a swap partition after installation

  1. #1
    Join Date
    Oct 2012
    Beans
    16

    Create a swap partition after installation

    Hi guys,

    I'm new to the world of ubuntu and I have yet to solve some issues to get my OS fully working : I don't know if it is linked but as I don't currently have a swap-linux partition, my sleep/suspend and hibernate functions do not work.

    Consequently, I have three questions

    1) How to create a swap partition after installation, knowing that I already have 4 primary partitions (I can't create any) and that I would like to use 15GB of unallocated space as a swap partition.
    Here is my HD is partitioned :
    SDA1 : boot
    SDA2 : win7
    15GB unallocated (to be mounted as swap partition)
    SDA3 : Ubuntu
    SDA4 : Samsung Recovery

    2) How to enable sleep/suspend ?

    3) How to enable hibernate ?

    I'm on Ubuntu 12.10 w/ Gnome environment.

    Thanks a lot for yout help

  2. #2
    Join Date
    Nov 2009
    Location
    Segur De Calafell, Spain
    Beans
    11,660
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Create a swap partition after installation

    On a hdd with msdos partition table there is no way to create new partitions when you have existing 4 primary partitions.

    There is a program called fixparts that is able to convert a primary partition into logical. I would try to convert the root partition you have (/dev/sda3) into logical, and that would allow you to create another logical from the 15GB unallocated space if it's position immediately before /dev/sda3 as you say it is.

    Note that changes like this have a certain amount of risk, so you should have a full backup before trying this. I have never used fixparts, but I have seen on it's website that it has ability to convert to logical. Read carefully the instructions on the website:
    http://www.rodsbooks.com/fixparts/

    Once you have the swap created, you will have to add it to /etc/fstab but that's easy. We can give you instructions once you are there.

    Also, once you have the swap partition I think hibernate will work by defauls. Now it doesn't work since the swap partition is where it saves data so it can hibernate.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

  3. #3
    Join Date
    Oct 2012
    Beans
    16

    Re: Create a swap partition after installation

    Ok finally I decided to reinstall ubuntu from scratch, I created a extended partition then added a swap-linux partition via gParted after the installation.

    How do I tell Ubuntu to mount it and use it as its swap partition ?

    Thanks !
    Last edited by aigljd; October 30th, 2012 at 10:05 PM.

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