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Thread: which swap is used by which OS

  1. #11
    Join Date
    Jun 2009
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    SW Forida
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    Distro
    Ubuntu

    Re: which swap is used by which OS

    UEFI requires an ESP which is FAT32.
    But you are using MBR(msdos). UEFI wants gpt, but if a drive already is MBR, Ubuntu will not make you change it to gpt to prevent data loss.
    Windows in UEFI boot mode requires gpt, and that will auto convert a drive from MBR.

    If redoing a drive, better to use gpt. With Ubuntu you can also use gpt with BIOS installs, if you have a bios_grub partition. I converted my first drive to gpt back in 2010 with Windows XP on another MBR drive.

    GPT Advantages (older 2010 but still valid) see post#2 by srs5694:
    http://ubuntuforums.org/showthread.php?t=1457901 &
    https://wiki.archlinux.org/index.php...antages_of_GPT
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  2. #12
    Join Date
    Jan 2008
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    Davison, Michigan, U.S.A.
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    1,113

    Re: which swap is used by which OS

    I'm pretty sure this is out of my ability to comprehend, so I guess as long as my system is operating well I see no reason to be concerned about my little swap issues.
    That being said, oldfred, I'll play along for a bit. I think you are suggesting that I have a UEFI system. I disagree because I do not have a /sys/firmware/efi file. If this is true, can/should I add UEFI in place of mt Bios? Or should I just leave well enough alone?
    Last edited by sofasurfer; 4 Weeks Ago at 03:43 AM.

  3. #13
    Join Date
    Jan 2008
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    1,113

    Re: which swap is used by which OS

    I think I solved my problem. I have a Dell Inspiron 660. Bios shows 'secure boot' disabled with no option to enable it. It also shows 'legacy' enabled with no other option. So I guess I'm just a legacy guy.

  4. #14
    Join Date
    May 2013
    Location
    Galiza
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    4,010
    Distro
    Ubuntu

    Re: which swap is used by which OS

    You had no problem to solve to start with. It was all in your head.

    If you have any "secure boot" mention in your firmware then it's UEFI but in your case "wrongly" (as in not recommended because there's absolutely no reason to) installed in Legacy/"BIOS" mode.

    UEFI requires an ESP which is FAT32.
    But you are using MBR(msdos). UEFI wants gpt, but if a drive already is MBR, Ubuntu will not make you change it to gpt to prevent data loss.
    Windows in UEFI boot mode requires gpt, and that will auto convert a drive from MBR.

    If redoing a drive, better to use gpt. With Ubuntu you can also use gpt with BIOS installs, if you have a bios_grub partition. I converted my first drive to gpt back in 2010 with Windows XP on another MBR drive.
    And better to install in UEFI mode in any UEFI based hardware, i.e., anything from at least 2012 or newer.

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