Information I've found here suggests that for my system, I need to install 13.04 into an EFI-type partition, since it needs to boot as UEFI.  I also understand it is advisable to have only ONE EFI partition on the disk; I've read here that it is OK for Ubuntu and Windows to share the same partition (please confirm).  When I try to install into the existing EFI drive, I get the message "No root file system is defined.  Please correct from partitioning menu."  Do I change the EFI boot partition to another type?  Doesn't that defeat the purpose?  If I change it to Ext4 Journaling File System, I am given the opportunity to define the '/' Mount point.  I haven't proceeded beyond this point for fear I am going to destroy Windows 8 by altering this partition.    BTW, I created three partitions in Windows before installing, per the helpful response to my previous question.  But if I try to install into the partition I created for Ubuntu, I get the "No root file system..." error again.  I have read this question/answer several times over:       Much of that answer talks about dealing with Secure Boot - I have already figured out how to disable Secure Boot, so according to that answer "there is no problem" there.  If I understand correctly, I want to stay in UEFI with Secure Boot disabled.  There is already have an EFI partition, and when I try to install Ubuntu into that EFI partition I get the error message "No root file system is defined.  Please correct from partitioning menu."  This is my question - and I may be missing something, but I don't see how the question/answer I duplicated helps me with that problem.
I'm absolutely new to Linux. I would like to know how to install Ubuntu alongside the pre-installed Windows 8+ OS.  Should I do it with Wubi, or through the Live USB/DVD?  What steps do I need to take to correctly install Ubuntu?
I have start learning Selenium WebDriver, but i am confused between Java and Python. Which language should i choose? I do have basic ideas of Core Java but haven't wrote a single piece of code with python.  So please suggest me which is the better language for Selenium WebDriver? How to add a class to a given element? Does potential energy in gravitationall field increase mass? Understanding UNIX permissions and file types I am building a new website on Wordpress, and all my pages have the add comment box at the bottom. I wish fo rthis to be removed from pages such as Home, Contact Us, About etc etc, but want it to remain on the blogs and galleries.  I have read  but do not really understand what this means to do. is there an easier way to do it. I do not have  under Settings -> Discussions. Is it true that the Fibonacci sequence has the remainders when divided by 3 repeating? I tried to install ffmpeg in trusty/Ubuntu 14.04 and got the following message:  $sudo apt-get install ffmpeg  Reading package lists... Done Building dependency tree        Reading state information... Done Package ffmpeg is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source  E: Package 'ffmpeg' has no installation candidate   Why isn't the package available? Explain travel times and distances on flight A flight from Los Angeles to ABQ is about 2 hours but is ~670.2 miles  A flight from San Jose to Chicago is 4 hours but is ~1859.0 miles  Can anyone explain why the travel time from San Jose to Chicago is not longer and closer to 5.75 hours?  If the distance increase by 2, shouldn't the time increase by a factor of 2 as well? What are "Community Wiki" posts? 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Currently, you only have a countably infinite independent set, but the dimension is size continuum. –   I believe the answer to this question is no, for the following reason. Suppose we have a spanning set for $\Bbb R$ over $\Bbb Q$, of cardinality $\frak n$. Then by definition we have the cardinality equation ${\frak c}\le^*[{\frak n}]^{&lt;\omega}\cdot \aleph_0$ (where $[{\frak n}]^{&lt;\omega}$ is the cardinality of finite subsets, and $\frak m\le^*n$ means there is a surjection from $\frak n$ to $\frak m$). If $\frak n$ is finite, then we get ${\frak c}\le^*\aleph_0$ which is false, so $\frak n$ is infinite (but not necessarily Dedekind-infinite). If we assume the axiom of choice, then the equation reduces to $\frak c\le n$, hence every Hamel basis is size continuum. But without AC I don't know any way to simplify the original equation to get anything stronger than &quot;$\frak n$ is infinite&quot;. 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