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Guys please help me on how to install ubuntu in my system.At present i am using Windows 7 ultimate version.My configuration 80GB HDD.C/:40GB,D/:20,E/:19GB.

Now I want to replace whole win7 in C drive with ubuntu OS. When I am installing it, I am getting an error message saying "No Root File Defined...please correct in the partition order.....bla bla...."so please help me on installing ubuntu...

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closed as too localized by Luis Alvarado Mar 14 '13 at 16:54

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

Does anybody read the documentation? – hexafraction Jun 29 '12 at 17:57

During the install you are asked to partition that part of the disc you want Ubuntu on. At least 1 of these partitions has to be named / (ie. root).

Example image:

enter image description here

The ext3 partition in the image needs to have a mount point name / for the system te continue the install (assuming the 1st one had windows on it (NTFS) and the 2nd one being swap).

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please explain me in clear cut step by step,so that i will install it easily....:) i mean,i have data in D and E i want to replace C drive win7 with ubuntu.... so how i have to replace it,so that i dnt wanna loose my D and E drives data.....please provide step by step info if possible..... – Chandu Dec 30 '11 at 6:17
All you need to know regarding this problem is in my post ;) If you want more information about installation please have a look at the many questions/anwsers on AU. If it does not help make a new question ;) – Rinzwind Dec 30 '11 at 7:04

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