errno[5] input/output error

[Orobo Lucky]

Each time i try the installer does the same thing, telling me i have issues with my CD/DVD drive when i don't. I followed a guide online that told me to use the memtest86+ utitlity to test my memory which i did and after 6 hours plus the memory turned out just fine yet i can't get it to install.

SYSLog and Partman are attached below.

RELEASE
Description: Ubuntu 14.10
Release: 14.10

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubiquity 2.20.0
ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
Uname: Linux 3.16.0-23-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CasperVersion: 1.345
Date: Thu Apr 30 08:44:35 2015
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
LiveMediaBuild: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
ProcEnviron:
 LANGUAGE=en_NG
 PATH=(custom, no user)
 LANG=en_NG
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Reviewing your log files attached to this bug report it seems that there is a problem with your installation media (CD/DVD). You can verify the integrity of the Ubuntu ISO files you downloaded by following the instructions at https://help.ubuntu.com/community/HowToMD5SUM. You might also retry your installation with new media. In the event that is is not in fact an error with your installation media please set the bug's status back to New. Thanks and good luck!

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Orobo Lucky (orobogenius)]

Thanks for the quick reply. I have verified the ISO and it matched the MD5sum and am sure it's not the installation media becuase i checked the disk for defect and nothing was wrong with it.

[Phillip Susi (psusi)]

Try checking the disk from the boot menu a few times. It may be that the disc itself is fine, but your reader sometimes returns bad data.

[Orobo Lucky (orobogenius)]

Have tried two different usb sticks, two different versions of ubuntu 14.04 and 14.10 and i have even tried removing both my rams and using it one at a time (although i used memtest86+ to test my memory which turns out fine) but it still gives that error. Funny enough, i have had ubuntu 14.04 installed before, which i upgraded to 14.10 and then to 15.04 and then i had to go back to 14.10 by deleting ubuntu partition. Now i can't get any of them installed

[Launchpad Janitor (janitor)]

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]