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What I do:
I prepare Ubuntu live USB and boot with it. I select the USB pen drive. The PC tries to boot from it.
What happens
I receive an error message: boot error.
What is expected:
A normal boot procedure.
Some other information:
1) No matter how I prepare the USB, I get the same result. The USB works just fine on some other PC.
2) The PC will boot from USB made to boot MS-DOS.
3) The PC is dual-boot, Win7 and Ubuntu(installed from CD)
4) The BIOS is Phoenix-Award(version of bios dated 2008), the motherboard is comparatively new.

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can you post the complete error message please –  VENKI Nov 22 '11 at 14:21
    
That is all: <br/> "Verifying DMI Pool Data ....... Update Success" " <br/> "Boot Error". These are all messages I got - no Ubuntu menu, noting. Tried installing mbr and formatting the drive to zip drive format. Not quite sure I succeeded with the last two. –  deckoff Nov 22 '11 at 14:51
    
I tried bypassing BIOS (I suspect) limitations with plop LiveCD, but still boot fails... –  deckoff Nov 27 '11 at 17:58
    
I have a computer that refuses to boot off a certain flash drive, even though I can boot with other flash drives, or even use the same flash drive to boot off other computers. I would suggest trying a different flash drive if you have one available, if not you can get a cheap SanDisk (which I have had really good luck with) or you can try booting a LiveCD, perhaps it isn't the flash drive at all. Also, what kind of flash drive is it? –  TheX Dec 2 '11 at 19:57
    
Which Ubuntu version(s)? on the PC (dual boot), and on USB (Live CD) attempting boot .. –  david6 Dec 2 '11 at 20:01
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2 Answers 2

up vote 1 down vote accepted

change usb drive from zip to hd and set it to first boot device.

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I think this worked, though I fixed it a while ago. I will accept the answer, even though I am not quite sure if this fixed the issue, this is a valid answer similar problems. I learnt a few thinks for these 2 years –  deckoff Oct 7 '13 at 18:11
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This worked for me. i think the BIOS is to blame. Award-Phoenix 6.00PG. 1) I create DOS bootable USB. Simply dd the iso found here This will be called DOS-USB

After doing this, the DOS-USB is seen as harddrive by the bios, not as usb 2) Download grub4dos and extract grub.exe from the zip and copy it in the root of the DOS-USB. GRUB4DOS download 3)Create file menu.lst(or copy the one from the zip) and add this:

title Boot MultiBOOT LinuxUSB
find --set-root /boot/bootme.tag
kernel /boot/grub/core.img
savedefault
boot 

(this entry assumes there is a file called bootme.tag in boot of your second, booting USB.You should create this one yourself. It is added as id file, since I assume most of you have Ubuntu installed, so searching for GRUB file will find two drives)

4) Create your booting USB(you need 2 USB for this solution) I call it Linux-USB. I use this tool but any GRUB2-based tool should work. MultisystemUSB though fails. I have not tried Unetbootin and Ubuntu Live USB

5) Create an Non-empty(some text will do) file, call it bootme.tag and copy it to /boot of your Linux-USB. Reboot with both USBs plugged, select to booth from DOS-USB. When you see c:, enter grub.exe, and select Boot MultiBOOT LinuxUSB entry. This should find and boot the Linux-USB.

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