Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

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

Getting this error Operating System not found when trying to install unbuntu through ISO file .

If i install with the option of giving the path to the iso image stored on my system. I get a message down that the operating system could not be detected.

Even if go install using the option i will install OS later and set the iso image path in VM settings. when i power on the VM i get Operating System Not Found error. Please Help!

share|improve this question
Welcome to Ask Ubuntu! To get a better answer and to help other users who may experience a similar problem, please edit your question with more information on the problem. Even a screenshot can be useful! – Timlah Apr 25 '13 at 7:52
@Tim Fothergill thanks for the advice. done. not able to upload image. and can u plz help me on the error. – mikdad Apr 25 '13 at 8:36
How are you installing? – Mitch Apr 25 '13 at 11:56
  • Check the ISO's SHA sum.
  • Try specifying manually the boot drive with pressing "ESC" at boot.
  • Check your HDD in the VM if the manual boot is not working.

Easiest way it to re-create the VM and that will make sure your CD is connected, and the HDD boots properly.

share|improve this answer
how to i check the SHA sum? and i have tried specifyng the boot drive manually. But nothing works – mikdad Apr 25 '13 at 9:07
Alright. Re-create the VM, and what OS do you use? If you are on Windows, you can use this: . SHA1 sums are here: ("SHA1SUMS" file.) – Shiki Apr 25 '13 at 9:10
i checked out the links you gave, but i am sorry i dont understand as to what relation does the SHA sum have to do with this? and my OS is windows 7 32 bits. – mikdad Apr 25 '13 at 9:14
and i have downloaded the ubuntu ISO file from their website which i am using for the installation – mikdad Apr 25 '13 at 9:14
can some one reply on this – mikdad Apr 25 '13 at 12:45

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.