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Thread: 12.04 Post Install SWAP Issue...

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  1. #1
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    Ubuntu 12.04 Precise Pangolin

    Question 12.04 Post Install SWAP Issue...

    I've added 12.04 three times now.
    Triple boot on an old desktop w/ Vista(which has serious issues), 10.04LTS, and 12.04LTS.
    Dual boot along side 10.04.
    And, on a new laptop with Windows 7, as dual boot.

    The issue I have is that the swap for the 12.04 always shows as 'unknown'.
    I discovered on the dual boot with 10.04, that if I delete the 'unknown' partition, or format it to swap (even though, only one swap can be shared with more than 1 Ubuntu), it will destroy the grub; and make the computer un-bootable. Thus, the 12.04 will have to be removed altogether.

    So, does anyone out there have this issue, or have an idea why I'm having it?
    I'm posting a gparted screenshot of the laptop Windows7/12.04LTS dual boot.


    Thanks in advance.
    Attached Images Attached Images
    Last edited by hank22077; August 16th, 2012 at 03:40 AM. Reason: forgot screenshot

  2. #2
    Join Date
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    Ubuntu Development Release

    Smile Re: 12.04 Post Install SWAP Issue...

    Quote Originally Posted by hank22077 View Post
    I've added 12.04 three times now.
    Triple boot on an old desktop w/ Vista(which has serious issues), 10.04LTS, and 12.04LTS.
    Dual boot along side 10.04.
    And, on a new laptop with Windows 7, as dual boot.

    The issue I have is that the swap for the 12.04 always shows as 'unknown'.
    I discovered on the dual boot with 10.04, that if I delete the 'unknown' partition, or format it to swap (even though, only one swap can be shared with more than 1 Ubuntu), it will destroy the grub; and make the computer un-bootable. Thus, the 12.04 will have to be removed altogether.

    So, does anyone out there have this issue, or have an idea why I'm having it?
    I'm posting a gparted screenshot of the laptop Windows7/12.04LTS dual boot.


    Thanks in advance.
    Hi Hank,
    The swap partition has nothing to do with GRUB or the boot sector. It is just a disk partition that acts as a virtual RAM when run out of physical RAM. From your screenshot, GRUB should be in "/dev/sda5/". If you have enough RAM, then you could technically not even have a swap partition (swap is not required).
    What probably happened is that somewhere in the Ubuntu installer the swap partition got deleted. I am pretty sure that it is safe for you to format "/dev/sda6" as swap without any issues.
    Also, it is good practice to create a new thread (like this one) instead of writing posts on already started threads
    Hope this helps! Let me know if you need more help.
    Last edited by jualin; August 22nd, 2012 at 04:41 AM.
    "In a world without walls and fences, who needs windows and gates?" Having trouble compiling drivers in a different kernel?, Dual Boot Tutorial Ubuntu Hardware Support List

  3. #3
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    Ubuntu 12.04 Precise Pangolin

    Re: 12.04 Post Install SWAP Issue...

    Thank you, jualin, the swap must have somehow been deleted, yes.
    But, somehow, trying to format the swap does mess up my grub;
    and, I tried to install grub on dev/sda5, but wasn ´t ´allowed´.
    I had to install in the windows base, which, I guess, is the problem with trying to format swap.
    I really have no clue.
    Also, I thought if I posted in earlier threads it would be easier to get help; and didn´t want to post an ´unnecessary´ new thread.

    Thank you, very much

  4. #4
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    Re: 12.04 Post Install SWAP Issue...

    That's weird that you can't install GRUB on sda5. Have you tried using Boot-Repair.
    You can install within Ubuntu using "option 2" (from the link).
    Code:
    sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
    sudo apt-get install -y boot-repair && boot-repair
    That should install GRUB and then hopefully you can format the swap partition using GParted.
    "In a world without walls and fences, who needs windows and gates?" Having trouble compiling drivers in a different kernel?, Dual Boot Tutorial Ubuntu Hardware Support List

  5. #5
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    Re: 12.04 Post Install SWAP Issue...

    Quote Originally Posted by jualin View Post
    That's weird that you can't install GRUB on sda5. Have you tried using Boot-Repair.
    You can install within Ubuntu using "option 2" (from the link).
    Code:
    sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update
    sudo apt-get install -y boot-repair && boot-repair
    Thanks, I´ll try that; and, let you get some rest.
    Appreciate the help.

  6. #6
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    Re: 12.04 Post Install SWAP Issue...

    Well, jualin, I still haven´t tried Boot-Repair.
    I´ve been having issues deciding which flavor of Ubuntu 12.04 I wanna upgrade to on my old desktop, cuz of some compatibility issues (posted elsewhere); anyway, I tried the minimalCD install on it and used the dev/ partition I used to install for grub, and it would not boot. I had to reinstall (dual-boot w/Vista) w/grub on the main Windows OS partion

    Therefore, since I do have plenty of RAM I´m a bit scared to try...

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