[ubuntu] Installer fails to read sector

Hi,

I'm trying to install Ubuntu 12.10 with dual boot along with a preinstalled win8 os in a dell inspiron 14z with uefi firmware.

I followed the simple instructions to make an efi install the uefi page, but after the Live CD has booted in uefi mode and I get the terminal-like menu and choose any of install / try ubuntu it fails showing a message wich reads:

Failure reading sector 0x5b500 from CD0

and then shows the kernel panic message in the picture attached.


Any idea what the problem might be?

Thanks in advance

Attached Images

ubuntu-installer-fail.png (625.4 KB)