Issue :- Error 5 Input/Ouput Error while installing Ubuntu 9.04.

OS:- Win Xp Sp2,sp3 and Vista.

Reason :- Bad Image of the disk

Summary :- I tried to install to Ubuntu 9.04 and when installation reached 61 % it gave me an error message Error - 5 Input Output error.

After spending almost 1 day and countless hours i was able to fix it.

How to fix this issue:-

1) You need to check the MD5 sum of the image which you have downloaded from the internet

a) How to check

MD5SUM on Windows

Windows does not come with md5sum. You must download one from another location, preferably one that you trust. There are command line utilities (md5sum.exe) that work similarly to the Unix utility; one public domain version with source is available fromFourmilab, but the version available from Cygwin is probably easier to install and update, and Cygwin is also recommended and trusted as the source for many more Unixy utilities. Once installed, Cygwin's md5sum behaves exactly as described in MD5SUM on Linux above.

There are also graphical tools such as the one used in the walk-through provided below.

Download and install winMD5Sum(http://www.nullriver.com/index/products/winmd5sum), a free and open source hash verification program.
Right-click the ISO file.
Click Send To, then winMD5Sum.
Wait for winMD5Sum to load and finish the checksum (this may take a significant amount of time depending on your computer's performance).
Copy the corresponding hash from UbuntuHashes (https://help.ubuntu.com/community/UbuntuHashes) into the bottom text box.
Click "Compare"
https://help.ubuntu.com/community/HowToMD5SUM?action=AttachFile&do=get&target=winMD5Sum.png
A message box will say "MD5 Check Sums are the same" if the hashes are equal.