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Thread: Trying to create multi "Live CD" USB myself

  1. #21
    Join Date
    Mar 2008
    Location
    Latvia
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    143
    Distro
    Xubuntu 13.04 Raring Ringtail

    Lightbulb Re: Trying to create multi "Live CD" USB myself

    I'm stuck... Let's try something different. Let's forget about my 16 GB USB flash drive with its GRUB2. Let's just try boot from Ubuntu's GRUB2 using ISO boot function.

    Should be simple, right? But I can't even do that...

    Here is separate thread, please help me do this first!?

    Then lets continue here.

  2. #22
    Join Date
    Mar 2008
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    Latvia
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    143
    Distro
    Xubuntu 13.04 Raring Ringtail

    Exclamation Re: Trying to create multi "Live CD" USB myself

    I have to admit success feels good!

    I finally found what was preventing my USB flash drive to boot Ubuntu.

    Here is reason #1 and #2

    Third thing which I needed to do was remove red:
    Code:
    linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile quiet splash noprompt --
    Remove "--". No idea what it does... Well, it works for ajgreeny, but not for me.
    Anybody has an idea why it is so??

  3. #23
    Join Date
    Apr 2008
    Location
    Southern California, USA
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Trying to create multi "Live CD" USB myself

    Quote Originally Posted by gigenieks View Post
    I have to admit success feels good!

    I finally found what was preventing my USB flash drive to boot Ubuntu.

    Here is reason #1 and #2

    Third thing which I needed to do was remove red:
    Code:
    linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile quiet splash noprompt --
    Remove "--". No idea what it does... Well, it works for ajgreeny, but not for me.
    Anybody has an idea why it is so??
    A little confused. Title says SOLVED, and first sentence here indicates the same. At any rate here's my saucy loopback that works:

    I'm using an external HD to store ISO's

    Code:
    menuentry "KubuntuISO" {
        set root='(hd1,msdos1)'
        set isofile="/ISO/kde-saucy-desktop-amd64.iso"
        loopback loop (hd1,msdos1)$isofile
        linux (loop)/casper/vmlinuz.efi boot=casper iso-scan/filename=$isofile noprompt noeject
        initrd (loop)/casper/initrd.lz
    }
    (note: .efi needed for saucy iso's)
    boot_info_script | AMD64 Athlon X2 Dual-Core - nVidia Geforce 6150 SE - 4GB DDR3

  4. #24
    Join Date
    Mar 2008
    Location
    Latvia
    Beans
    143
    Distro
    Xubuntu 13.04 Raring Ringtail

    Re: Trying to create multi "Live CD" USB myself

    Sorry, let me clarify.

    If I remove "--" iso boots. If I let them stay as they are - iso doesn't boot.
    Apparently, member ajgreeny has no problems having "--" at the end.
    I'm just curious what "--" does?

  5. #25
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Trying to create multi "Live CD" USB myself

    I noticed I remove the -- also as I always have to add nomodeset and only newer versions had that as a default in grub. So I have edited it out also.
    Not sure what function it serves.
    Oldfred on vacation. Back Sept 9. Will not have much if any Internet access.
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  6. #26
    Join Date
    Jun 2007
    Location
    Lynne Valley, BC
    Beans
    2,574
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Trying to create multi "Live CD" USB myself

    Did you remove "--" or "-- " , (--<space>).

    Often when making a persistent drive I add " Persistent" after "--".
    Last edited by C.S.Cameron; June 12th, 2013 at 02:24 AM.

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