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I have a Sony laptop (VPCEH25EN) and i am trying to install Ubuntu 12.04 LTS. I downloaded the iso named "ubuntu-12.04-desktop-amd64.iso". For installing i created a bootable USB using UltraISO.

When i booted the USB it hangs and shows " Booting from USB ", I even left it for hours and it didn't moved a bit. When I booted the ISO in Virtual Box, it ran well.

I even used other tools to make a bootable USB, then it says " BOOTMNGR missing ".

Please help, I am new to Ubuntu and my optical drive is fried.

Thanks in advance..

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2 Answers

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Try creating the bootable USB using UnetBootIn.

My experience with this program is excellent.

Otherwise if you have another Ubuntu computer you may try "Startup Disk Creator"

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Thanks for the advice but i tried it, it only says "BOOTMNGR MISSING" although I haven't used Startup Disk Creator. – Hitesh Bhatt Nov 21 '12 at 13:17
The "Startup Disk Creator" worked fine but he is asking me these: Busy Box v 1.8.5 (Ubuntu 1:1.18.5 - 1ubuntu4) build-in shell (ash) Enter 'help' for a list of build-in commands (initrants) Busy Box v1.18.5 (Ubuntu 1:1.118.5-1ubuntu4)multi-call binary. Usage: mount [options] [-o OPTS] DeEVICE NODE Mount a filesystem.Filesystem autodetection requires /proc. Option: ............... These are file system-specific -o flags. Can not mount /dev/loop on /cow //info ends here.Please help – Hitesh Bhatt Nov 21 '12 at 16:39
By any chance do you have any other usb devices connected to your computer? Try disconnecting all but the bootable pendrive. – To Do Nov 21 '12 at 16:41
No other USB device is connected. Thanks for helping is such short notice.... – Hitesh Bhatt Nov 21 '12 at 16:44
Bootmgr is Windows bootloader. So it is trying to boot Windows. If you remove the USB drive, does windows boot? – To Do Nov 21 '12 at 17:25
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In addition to the solution proposed above (UnetBootIn), downloading Ubuntu via the torrents is often less corrupt than a direct download of a large .iso file. HERE is the link (scroll down to Torrents).

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The copy is running fine in Oracle VM Virtual Machine, it just doesn't boot. – Hitesh Bhatt Nov 21 '12 at 13:23

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