Possible Duplicate:
“errno 5 - input/output error” when trying to install
I'm trying to install Ubuntu 11.10 on my laptop with Ubuntu 11.10 , 64-bit version through a usb drive
I get the following error: This particular error is often due to a faulty CD/DVD disk or drive, or a faulty hard disk. It may help to clean the CD/DVD, to burn the CD/DVD at a lower speed, to clean the CD/DVD drive lens (cleaning kits are often available from electronics suppliers), to check whether the hard disk is old and in need of replacement, or to move the system to a cooler environment.
My hard disk is brand new and I also ran tests which showed that it was fine. Also, the USB works fine on other machines.
Should I run 32 bit version? I was using windows 7 64 bit version earlier on the same machine, but its hard disk got corrupted and I don't have a bootable windows cd/dvd to reinstall.
I read in a couple of forums that replacing/removing ram does the work. I have one stick of 2gb which is 2 years old and ran fine on windows, so that's not an option for me. Please advise.