Ubuntu: Not booting from USB or CD (SYSLINUX Message)


I am trying to install linux on my laptop, a Toshiba Satellite C6550-S5200. I did it once but something happened so I removed it then I had to destroy all data on hard drive so now I have nothing on it. Well I got a iso file burned to a CD and to a flash drive. With the flash drive I get.

SYSLINUX 4.06 EDD 4.06-pre7 Copyright (C) 1994-2012 H. Peter Anvin et al

With the CD it will start booting it but somewhere loading it up, the dots turn all orange and stay that way and my CD drive turns quiet.

Oh and some more info the images work because I tried loading them up on another pc and it worked just fine.

I manage to get the CD to boot I just had to let me pc boot up first then insert the CD and have it boot the CD then. Once I get done installing ubuntu it works fine but I have to leave the PC on 24/7 for if I turn it off the PC will freeze 5-10 seconds after booting back up no matter how I install it.


I ran into this, too. The issue I found was that my 16 GB USB was formatted as NTFS. I tried changing the block size and reformatting with Windows Quick Format, but what solved the issue was to reformat as FAT32. Ubuntu boots just fine, now. Too bad I can't use NTFS, but the difference will be minor.


If you have access to a Windows machine, make one using Rufus. I have had trouble with unetbooting and live creator, but rufus seems to work every time.


If you are using a Sandisc USB stick, the problem often is the U3 partition.

use http://u3.sandisk.com/launchpadremoval.htm to remove it (from windows)


This is HP related problem. I've got the same issue with Linux Mint 12 rc. It boots from the USB fine on Lenvo thinkpad or Dell Latitude but on HP doesn't work. What is strange that I've got another pendrive with XP like live linux based on Ubuntu 10.04 and this boots just fine on HP. Tested on different HP machines.

both were created using the same Unebootin.

And today I found the solution. You need to go into BIOS setup (for HP usally f10 during startup), go to "System Configuration" tab or similar and to Boot Options. Setup the highest priority for USB Hard Disk (should be before USB CD-ROM - the best is to give USB CD-ROM the lowes priority eg. seventh). Also USB Hard Disk should be before USB Floppy.

Hope this would work for you either.


The only solution to your problem is Try again until it works!

To start with,there is a bug report about the problem you are facing at Launchpad.

The boot fail may be a result of many reasons.You could try:

-> Check if the .iso image you downloaded is healthy.

-> Format your USB drive and try burning the .iso file again

-> Use onother burning program


Try using the unetbootin program in ubuntu to make your USB bootable with ubuntu. Use your bios settings to select the USB device to boot afterwards.

EDIT: Since I initially wrote this answer, I powered up a bit in knowledge. Word around the internet frowns upon unetbootin. Here is a list of random reasons:

  • no proper UEFI support
  • apparent issues with systemd
  • actually had some personal problems when making live cds of some more esoteric distros (like the late crunchbang)

If you have access to a Windows machine, like the other answer by AtariBaby, Rufus is your best bet. It supports variuous partition schemes and boot particularities.

If you have access to a GNU/Linux/Unix distro or toolset, use dd. It's probably the best way of cloning drives or burning images to them. User densmorea or reddit puts it better and gives a few links to tutorials on using dd.

I'll also post the links here for future reference and alien explorers:


I was having a similar issue, loading form usb key would stop on 'syslinux 4.04....'

I reformatted the usb key Startup Disk Creator on another computer and loaded the contents from iso I downloaded and it works for me, seems like the usb formatting was incorrect.


I suggest making a bootable USB by using a tool called mkusb. I had the same error and mkusb managed to install ubuntu without problems.

Similar problem and solution discussed here.


Did you test the MD5SUM of the .iso image used to create the live USB flash drive? (See https://help.ubuntu.com/community/HowToMD5SUM, and note that if you are trying to install Ubuntu 11.10 Oneiric Ocelot, the relevant MD5 hashes are not yet at https://help.ubuntu.com/community/UbuntuHashes, so you'll have to use http://releases.ubuntu.com/oneiric/MD5SUMS.)

If that does not check out, then redownload the .iso image and try again (make sure to MD5 test the new .iso image, too).

If that checks out, and you are sure you are writing the USB flash drive using a correct procedure, then try writing it without any persistent storage. If that doesn't work, try writing it with the Universal USB Installer instead of UNetbootin, as described in Step 2 at http://www.ubuntu.com/download/ubuntu/download (click "Show me how").

If none of that works, you should make sure it's possible to boot from the USB flash drive on another computer (such as one belonging to a friend) to verify that it is physically OK, or try a different USB flash drive (if you have one), or try burning the .iso image (slowly, to minimize the chance of errors) to a CD or DVD.


Impatience could be the problem here - it takes a very long time for ubuntu to leave that screen.

Failing that, there are a few things you could try:

You could make a new USB. That would eliminate the USB as the problem, leaving ubuntu or the computer as the problem, if the computer still fails to boot.

I noticed that at the end of the message you get a pre1. This could mean you are running an unstable, prerelease version of SYSLINUX. You could look for an older version of ubuntu and attempt to install that. (Try 10.04 LTS.) This should determine whether the error is ubuntu 12.04 or the computer (if it works with 10.04, then the problem is ubuntu.)

From there I can attempt a few different things, but first run these tests and tell me what happens.


One possible solution is to create your bootable USB using either Unetbootin, which works well on both Windows and Linux. Furthermore, if you are on linux you could try the dd command: sudo dd if=path/to/your/iso/here.iso of=/dev/sdb where /dev/sdb is the path to your usb drive. BE CAREFUL, if you write the path of your harddisk as the output you will ruin your hard disk data!

To discover the path of your USB disk type sudo fdisk -l in a terminal or open Disks (Ubuntu 12.10) or Disk Utility (previous editions).

dd will take some time so please be patient.


I solved this issue by using fdisk to create a new partition table:

fdisk /dev/sd??  o  w  

I then used gparted to create a new fat32 partition, and finally the default startup disk creator to create the startup disk

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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