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“unable to find a medium containing a live file system” error when installing

I got this error while trying to install ubuntu 10.10 from a bootable USB stick on to Sony Vaio P series laptop. The disk boots into the language and installation type screen. After that it goes through the splash and pulls up this error:

BusyBox v1.13.3 (Ubuntu 1:1.13.3-ubuntu11) built in shell (ash)

Enter 'help' for a list of built-in commands.

(initramfs) Unable to find a medium containing a live file system

After getting this error the installation fails to start.

I have used the same USB stick on some other laptops and the installation started as usual. Any help will be appreciated.

My installation is i386 and my machine is Vaio P VGN-P610.

I've tried every possible thing:

Bios: [enable boot external]

Boot order: [external] [hard drive] [network boot]

Tried 2 different USB drives

Tried 2 different external CD drives

Tried 6 different downloads of both the desktop and netbook remix.

All downloads were checked with MD5SUM.

Ubuntu Desktop 9.10 installs properly in every version and from every source.

Getting reaaaally frustrated.

marked as duplicate by Marco Ceppi Feb 26 '11 at 14:44

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