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Thread: Bootmgr is missing - USB install

  1. #1
    Join Date
    Apr 2013
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    Bootmgr is missing - USB install

    Hi everyone - really need some help with something that I should be able to sort myself but no amount of forum browsing is helping.

    I have just finished building the first of a number of computers made from second hand and randomly collected parts which will form a render farm for autodesk maya. Working on an extremely tight budget I will be using ubuntu and installing maya onto that and just using the backburner to run on the other machines. Now I am having real problems installing ubuntu via USB onto the PC (there is no optical drive). I have a newly formatted 40gig hard drive and have set the boot order in the BIOS to USB first and all I am getting is the bootmgr is missing error.

    I have built PCs in the past and successfully installed windows so I am 99% sure that I have my system set-up correctly however there may be some 'trick' I need to do for ubuntu. Would really appreciate your help. I can't afford to buy many copies of windows!

    Steve

  2. #2
    Join Date
    Jun 2007
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    Lynne Valley, BC
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    2,575
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    Ubuntu 12.04 Precise Pangolin

    Re: Bootmgr is missing - USB install

    Welcome to the Forums.

    What program did you use to install Ubuntu to the USB?
    I prefer Startup Disk Creator or UNetbootin.
    Did you check the MD5SUM of the iso.
    Some bios see Flash drives as just another drive, so in BIOS the flash drive is set as first HDD and the BIOS is then not set to boot USB first.
    Some older computers will not boot flash and then you need something like Plop boot manager.
    Some newer computers with Secure Boot find it hard to dual boot flash.

  3. #3
    Join Date
    Apr 2013
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    Re: Bootmgr is missing - USB install

    Thanks for the reply. I used universal usb installer from the ubuntu website.

    I'm afraid I don't know what MD5SUM is so I can't answer that.
    I think the boot order is right as I set it to cd-rom and harddrive with no media in and got the 'disk boot failure - insert system disk' message.

  4. #4
    Join Date
    Mar 2013
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    3

    Re: Bootmgr is missing - USB install

    Did you format the Flashdrive?

  5. #5
    Join Date
    Apr 2013
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    Re: Bootmgr is missing - USB install

    Yes I did. Everything the USB and the Hard-drive has been freshly formatted.

  6. #6
    Join Date
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    Re: Bootmgr is missing - USB install

    MD5SUM will tell you if the downloaded iso is corrupt, ie a bad download.

    https://help.ubuntu.com/community/HowToMD5SUM

    Lots of people have had problems with Universal.

    Have you tried the flash drive on another computer

  7. #7
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
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    Ubuntu 14.04 Trusty Tahr

    Re: Bootmgr is missing - USB install

    If it is a bootable flash drive your BIOS should see it as a bootable device. Some may show it as another hard drive, not in the list of USB devices to boot.
    If you do not have USB as a choice your system may not boot from USB devices. If less than 6 years old it should boot from USB.

    Bootmgr missing is from hard drive as that is a Windows error.
    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.







  8. #8
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    Apr 2013
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    Re: Bootmgr is missing - USB install

    thanks everyone for the replies. I will check with MD5SUM tonight on Friday as I am away with work until then. I downloaded the ISO from the ubuntu page but I guess things can always go wrong. I will also try another USB installer you recommended above.

    The bios lets me choose USB-FDD and various other USB options but none work. At the moment I only have my big-rig workstation and my laptop to test and I don't really want to mess around with my rig as if anything goes wrong I could miss a clients deadline. How do I test it on my laptop without screwing up what's already on there?

    Thanks and sorry to sound such a noob! I am so used to just putting a windows CD in and letting it work!

  9. #9
    Join Date
    Jun 2009
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    Ubuntu 14.04 Trusty Tahr

    Re: Bootmgr is missing - USB install

    My system had many USB settings like the USB-FDD and originally I tried all of them, nothing worked. I tried flash drive on my laptop and it worked, so I know it was good. I just about gave up. But I had it plugged in and since I have multiple hard drives went into the list to change which drive I boot from and there it was. It is often listed as a hard drive choice not a USB choice. And it boots like another hard drive. I put a full install into my 16GB flash drive and it boots as another hard drive only a bit slower.

    You should be able to boot and have two choices. One is install and the other is live mode. You should always use live mode to test that everything works and you start to understand some of the differences of Ubuntu. It will not be fast since running from flash drive, but most once loaded is cached in RAM so it runs well once started up.

    Depending on video you may also need boot parameters. I have nVidia and have to add nomodeset on every live mode boot and first boot after install or until I install the nVidia drivers.
    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.







  10. #10
    Join Date
    Jun 2007
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    Ubuntu 12.04 Precise Pangolin

    Re: Bootmgr is missing - USB install

    So where can I find Maya 2013 for Linux?
    I don't see it on the Autodesk demo site.

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