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Thread: Problems creating bootable USB

  1. #1
    Join Date
    Nov 2012
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    Problems creating bootable USB

    Hello,

    I am trying to install Ubuntu from a bootable USB stick. However, it seems that it is written corrupted on the USB. I have tried both the ubuntu-12.10-desktop-i386 and the ubuntu-12.04.1-desktop-i386 ISO files. I have tried Universal-USB-Installer-1.9.1.5, YUMI-0.0.7.9 and the latest version of LiLi. Sometimes, I would get "syslinux error: No DEFAULT or UI configuration directive found". Other times, I would get "invalid or corrupt kernel image". Looking at the USB contents, the syslinux folder and some other folders would display really strange contents, with folder names being parts of a phrase and the next folder or file being a continuation of that phrase. Other times, the syslinux folder would be empty.

    I have tried it on a USB stick formatted with FAT and FAT32. I have scanned the USB stick for errors and it came out all right. I have checked the md5sum of the .iso files and it was correct.

    What could be the problem?

    I should add that I want to install it to an Asus Eee Pc that has no optical drive, so I can only use a USB stick.

  2. #2
    Join Date
    Oct 2012
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    185

    Re: Problems creating bootable USB

    Quote Originally Posted by Anisaz View Post
    Hello,

    I am trying to install Ubuntu from a bootable USB stick. However, it seems that it is written corrupted on the USB. I have tried both the ubuntu-12.10-desktop-i386 and the ubuntu-12.04.1-desktop-i386 ISO files. I have tried Universal-USB-Installer-1.9.1.5, YUMI-0.0.7.9 and the latest version of LiLi. Sometimes, I would get "syslinux error: No DEFAULT or UI configuration directive found". Other times, I would get "invalid or corrupt kernel image". Looking at the USB contents, the syslinux folder and some other folders would display really strange contents, with folder names being parts of a phrase and the next folder or file being a continuation of that phrase. Other times, the syslinux folder would be empty.

    I have tried it on a USB stick formatted with FAT and FAT32. I have scanned the USB stick for errors and it came out all right. I have checked the md5sum of the .iso files and it was correct.

    What could be the problem?

    I should add that I want to install it to an Asus Eee Pc that has no optical drive, so I can only use a USB stick.
    The problem is probably with the ISOs. Have you checked their md5 hashes? if not then consult the following links.
    Sorry didn't read your post properly.
    https://help.ubuntu.com/community/HowToMD5SUM
    https://help.ubuntu.com/community/UbuntuHashes
    Last edited by pkadeel; November 14th, 2012 at 11:40 AM.

  3. #3
    Join Date
    Jul 2011
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    Re: Problems creating bootable USB

    I have tried it on a USB stick formatted with FAT and FAT32
    try to format in NTFS or if it is possible in ext2

  4. #4
    squakie is offline I Ubuntu, Therefore, I Am
    Join Date
    Oct 2012
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    Ubuntu 14.04 Trusty Tahr

    Re: Problems creating bootable USB

    I would stongly recommend you use unetbootin to create the flash. There are versions available for Windows and for Linux, so you shouldn't have a problem running it somewhere. It does require net access (unless you already have the ISO, but I would recommend letting it do the download). I haven't had that fail for me if that's the option you want. If you have a running Ubuntu system, I believe you can create the same thing via the boot disk creator (I forget the exact name - I'm sure someone else can help you on that route). With unetbootin I *think* it does the formatting as well, so you shouldn't have to worry about that.

  5. #5
    Join Date
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    Re: Problems creating bootable USB

    Quote Originally Posted by squakie View Post
    I believe you can create the same thing via the boot disk creator (I forget the exact name - I'm sure someone else can help you on that route).
    It's called Startup Disk Creator. As squakie said, that's only helpful from a working Ubuntu system.
    Jane, stop this crazy thing!

  6. #6
    Join Date
    Nov 2012
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    Re: Problems creating bootable USB

    Formatting it in NTFS didn't work, so I figured the USB stick must be broken. I bought another one and I managed to install the image on it without the funky folder names.

    However, now the computer won't boot from it. It is detected in BIOS as UEFI USB or something like that, but when I restart, the computer skips to the next boot option.

    I tried both NTFS and FAT with the new USB stick. Unetbootin does not offer Ubuntu 12.10 as an option and I did not get the option to format in ext2.

    Is there something else I could try?

  7. #7
    Join Date
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    Ubuntu Development Release

    Re: Problems creating bootable USB

    Use Unetbootin but select your 12.10 image manually by browsing to the .iso file instead of selecting it from the drop-down list.
    Just click on the 'Diskimage' radio button then on the browse button '...' to select your ISO.

    FAT32 always works for me when creating bootable USB's, the only times I've had problems is when I haven't been using Unetbootin to create them.
    Last edited by Cheesemill; November 14th, 2012 at 04:52 PM.
    Cheesemill

  8. #8
    Join Date
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    Xubuntu 13.04 Raring Ringtail

    Re: Problems creating bootable USB

    I've tried the three Windows installers you listed and have had consistent good results from the Pendrive Universal. Yumi seems focused on multibooting from the USB and has a long multiclick boot selection sequence, and LiLi takes a very long time churning for the Live USB to boot.

    You don't say if you are letting the Pendrive installer format for you. There is a dialog tick box for that and I'd suggest using it instead of formatting through Windows.

    I was going to mention that I recently for the first time had a thumb drive go bad on me, which was confusing, but see you've got a new one now.
    New to Linux. Currently dual boot Lubuntu 10.10 with W7 on Acer One netbook. Experimenting with Mint 15 XFCE on netbook and a Dell laptop with peripherals (Persistent 8GB Live USB.)

  9. #9
    Join Date
    Nov 2012
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    Re: Problems creating bootable USB

    I've tried the bootable USB on a Lenovo laptop and it boots normally into Ubuntu. I've also tried an older Asus laptop and it doesn't work either. It seems that the problem is with Asus. I've e-mailed Asus and I'll wait for their answer.

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