Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have downloaded an ISO file of Ubuntu 12.10 x86 from the official website ( When I tried to install it, everything was going good until I got the error message something like The media you are using is probably corrupt or you have a hard disk error. It did't tell me what to do.

I'm already running Windows 7 Ultimate on my PC and it's running fine. I have tested my hard disk for error and no errors were found by System Mechanic Pro 11. After that, I tried to install my Windows 7 on the same partition and it was successful.

Even now I am unable to install Ubuntu.

share|improve this question

I suggest you try to re-download and re-burn your Ubuntu ISO. It seems like it got messed up in the process.

This time, try reading the How To MD5 Sum article to verify that the download was successful.

The expected output for 12.04 32 bit should be:

e235b63c02644e219b7bf3668f479c9e *ubuntu-12.04.1-desktop-i386.iso


First open a terminal and go to the correct directory to check a downloaded iso file:

ubuntu@ubuntu-desktop:~$ cd Downloads

Linux is case sensitive so "Downloads" is NOT "downloads".

Then run the following command from within the download directory.

md5sum ubuntu-11.10-dvd-i386.iso

md5sum should then print out a single line after calculating the hash:

8044d756b7f00b695ab8dce07dce43e5 ubuntu-11.10-dvd-i386.iso
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.