My desktop is about 2 years old. It has "Intel G41 chipset" with "Intel Core2duo processor", 4GB DDR2 RAM.
I want to install Ubuntu 12.04 alongside Windows 7. I downloaded "ubuntu-12.04-desktop-i386.iso" file and burn it on to a CD. Then I inserted in it on my drive and reboot my desktop.
Installation started, but after passing almost half an hour, installation stopped. It showed error lines like this:
2816.493003 end_request I/O error,dev sr0, sector 1291668
When installation stopped, I re-inserted the CD and ran
wubi.exe from Windows, then tried "help me boot from CD" option, but after 3-4 mins, an error message popped up saying "permission denied".
I also tried the option described in here, but same messages show every time. What should I do to install Ubuntu now?