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Tricking Wubi into installing Xubuntu 12 10

Xubuntu is no longer available on Wubi from release 12.10 and later - as I mentioned here: Xubuntu option to be removed from Wubi. However, there are some people that will want to try it out with Wubi anyway, so heres a way to do it.

Disclaimer: I dont recommend the technique I describe here, but it works fine if thats what you want to do.

It involves downloading two ISOs, one for Xubuntu and another one supported by Wubi. Ill choose lubuntu since its the smallest.

1. Dowload the smallest supported ISO: lubuntu-12.10-desktop-i386.iso
2. Download xubuntu-12.10-desktop-amd64.iso (I want 64-bit, but you can use 32-bit too)
3. Check the xubuntu md5sum (Wubi will check lubuntu, but you need to check xubuntu).
4. Download wubi.exe for release 12.10
5. Make sure wubi.exe and the lubuntu ISO are in the same folder. Run Wubi and select lubuntu. 
6. When it tells you to reboot, select "Reboot later".
7. Replace C:ubuntuinstallinstallation.iso with the Xubuntu ISO (renaming to installation.iso)
8. Mount the Xubuntu ISO and copy initrd.lz and vmlinuz from the /casper/ directory over the one in C:ubuntuinstall
9. Edit the preseed.cfg file in C:ubuntuinstallcustom-installation so that it installs xubuntu-desktop instead of lubuntu-desktop
10. Reboot the computer
11. Select Lubuntu
12. Watch Xubuntu install
13. Reboot, select Lubuntu and boot into your new Xubuntu install.

You dont strictly need to predownload the lubuntu ISO but its faster than letting Wubi do it. If you decide to use the Ubuntu ISO instead of lubuntu you do have to download the ISO beforehand (because Ubuntu defaults to the preinstalled diskimage and that wont work with this technique).

Notes:
I used the C: drive for clarity - if you install to a different drive then modify as required.
If it bugs you, you can rename the Lubuntu menu entry to Xubuntu using bcdedit or easyBCD. 

Here are some screenshots for selected steps:

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Step 3: Check Xubuntu MD5 sum

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Step 5: Run wubi.exe with lubuntu in the same folder

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Step 6: Select to reboot later

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Step 7a: Delete the existing installation.iso

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Step 7b: copy the Xubuntu ISO and rename to installation.iso

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Step 8: Mount the xubuntu ISO and copy vmlinuz and initrd.lz

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Step 9: Set it to install xubuntu-desktop

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Step 11: Select Lubuntu

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Step 12: Watch it install Xubuntu

Credit: I got this tip from here ironically to install lubuntu prior to it being supported by Wubi.

Update:
The original post had this line: "This technique will also likely work with other unsupported flavours e.g. ubuntu-studio". It does with one caveat. Ubuntu Studio doesnt include the package required by grub to generate the menu entries that can boot a loop mounted install (lupin-support). So it will install, but you have to manually boot it the first time from the grub prompt and then install lupin-support.

 Heres how to manually boot any Wubi install:

search -s -f -n /ubuntu/disks/root.disk
probe --set=diskuuid -u $root
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /vmlinuz root=UUID=$diskuuid loop=/ubuntu/disks/root.disk ro quiet splash
initrd /initrd.img
boot

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Turn Any Photo Into Enscape Content In a Matter of Minutes

With the newly announced partnership between Archvision and Enscape, some interesting possibilities have opened up. If you own both Archvision Dashboard and Enscape, you can rapidly create custom RPC and view it in your Enscape presentations, including in VR.

Overview of the process

You can also read the full media release here.

Heres how to do it:

Edit your image...

Save as PNG with Transparency (I used Irfanview here)

Click Apply / Process...

Then drag and drop to Revit,


Locate it correctly,

and start Enscape...

Enjoy!

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Turning vision into a reality

Taken from The Hindu.
We seldom spare a thought for the simplest of things that could be within our reach but remain out of our mind.

For instance, how many of us knew that the annual cost of educating a visually challenged student at an Indian University (including lodging and boarding at the University hostel) is same as the cheapest iPad 3.

Read more �

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Turn The Google Menu Bar Into An Ubuntu themed Panel

Google began rolling out a darker menu bar across its sites and services yesterday.
This minor similarity has led one developer to create a userstyle that replaces Google�s choice of menu bar with an Ubuntu Ambiance-themed �Panel� style � even through to the highlight colour used in menus

Download

The userstyle is available to download from gnome-look.org.
Once fully download head to your Downloads folder and extract the .zip archive.
Next open your �Home� folder and press �CTRL+H� to reveal hidden files and folders.
Google Chrome/ium users need to move the css file to:

• ~/.config/chromium/Default/User StyleSheets/

Firefox users need to move the css file to:

• ~/.mozilla/firefox/yourProfile/chrome/

Going Further in Chrome

For an even greater Ambiance-themed Chrome you can also install: -

• Ubuntu-style scrollbars
• Ubuntu coloured hover/highlight text  

The credit goes to...

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Turn your laptop into WI FI hotspot in 10 simple steps

.........Continue ����

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Turning a NetBook into an eBook Reader

I like reading books, the one that you hold in your hands and turn the pages manually :) I like all types of books - but my favorite (ever since I was a young boy) are science fiction (or sci-fi, for short) books. I used to read them all the time, much to my parents despair. My dad thought I should have been reading my school-books and my mom thought I should apply the same zeal to the Koran. This avaricious appetite for sci-fi books continues to this day - and now that I have lots of free time on my hands, I find myself at a quandary, as far as book reading goes. Being retired means little or no steady income - which in turn, means that I simply cannot afford to purchase as many books as when I was working. Books are getting more and more expensive nowadays -so what is a compulsive reader to do?

In addition to the increasing book cost, there is one more issue concerning the existing books that I own. Books, especially paperback books, dont last and some of the ones that I have (especially my favorites, which kept being read over and over) are now so tattered that no amount of scotch tape (or rubber bands!) can keep them in one piece. There is a solution to this looming disaster - and that will be outlines in my next post.

In the meantime, I need to get more books, especially sci-fi books without spending too much money. Of course, free books are better - only I have to look for them. Armed with only my PC (and netbook, if I am on the road) and the World-Wide Web (or internet), I set forth to locate these gems, if indeed they are available. Using Google search, I was amazed to find a treasure trove of free sci-fi books available at several web sites - you can also find them easily as I did by typing free sci-fi ebooks into your Google search field. My first visit was to the Free Library of Baen Books (Baen Books is no stranger to me as I own a lot of books that they publish) and they freely offer a number of sci-fi books in several ebook format - most of which I was not familiar with - except HTML and RTF format.

Being an old-fashioned geezer, I always like to hold a physical book while reading. Reading an HTML formatted ebook on a desktop computer always gives me a headache (plus I cant curl up on the sofa while reading a book on my computer!) . It is always a chore to re-size a web browser (normally Firefox) to decrease the number of words per line in order to make it easier to read, and sometimes having to increase the font size so it is more comfortable to my old eyes, before I can settle down to read the book. Even with all that adjustment, I still am not comfortable enough reading the book - primarily because it does not emulate the book-reading experience to a great degree. Now I do realize that it is impossible to get a 100% emulation of the book-experience but there got to be something I can do to improve the situation.

Of course, there are dedicated ebook readers like the Kindle and the Nook but they are priced way too high for me to afford - plus some of them have way too small a screen size. The larger screen sized one are even more expensive. This also rules out the new tablets like the iPad and their imitators - because of the type of LCD used in their display (as opposed to the eInk display of dedicated ebook readers), reading a book on the iPad gives me a bigger headache that on a desktop computer. Believe me, I tried it on my sisters iPad - it was not a good experience at all. So, for me, a dedicated ebook reader is out of the question. The question now remains - what can I use to read ebook and maximize the book-experience?

Then it struck me! I have a netbook - a portable computer small enough (but with a 10 inch screen) to hold in my hands like a book. Can this device replace a book? Are there (free) ebook readers software available for both the Windows and Linux OS? Can the text of the reader software be rotated 90 degrees so that it emulates the portrait mode of a book? These were the questions that ran through my mind - time to research the web for answers. After several days of research, I finally came up out a workable solution, which I now present to anyone that faces the same problem that I faced and wants a solution.

The netbook that I own is a Lenovo S10-2 Ideapad but the solution can apply to all netbooks. The advantage of using a netbook as an ebook reader is (a) it is small enough to hold in the hands like a book and (b) the netbooks battery can last long enough for usage as an ebook reader. It does not matter whether you are using the Windows or Linux OS because the ebook reader and converter software works on both OS, i.e., there are versions for both OS. Now lets get cracking and turn that netbook into an ebook reader :)

First, fire up your web browser and visit http://www.fbreader.org and read about the FBReader (not FBReaderJ) software. The FB in the name of the software is a bit misleading - it has nothing to do with FaceBook (or FB, for short). The FB in the name of the sofware refers to the FB2 format - a Russian ebook standard - the de facto format of this reader. However, it can also handle the EPUB, MOBI and PRC formats - the ebook formats most widely used. This software is the only ebook reader that I know of that can rotate the text of the book by 90 degrees so that the netbooks screen now emulates the page of a book. Take care though, this reader software cannot handle some EPUB-formatted book correctly; but MOBI or PRC-formatted ebook are handled correctly. Also, you need to be aware that it cannot handle HTM or PDF documents at the moment - a big pity but you can convert those with the converter which I will describe later. In the meantime, download the FBReader software - both Windows asd Linux versions are available so make sure you download the correct one for your netbook.

If you are wondering why there are so many formats for ebooks (wikipeedia lists 26 formats, with it likely to increase with time), then you are not alone. Visit http://gizmodo.com/5478842/giz-explains-how-youre-gonna-get-screwed-by-ebook-formats for a read on the ebook formats war.

Next, visit http://calibre-ebook.com/ and watch the demo video and then download either the Windows or Linux version. Calibre is open source e-book library management application. It is also an excellent ebook format converter with the ability to convert over thirteen document formats into EPUB, PRC and MOBI formats - the 3 formats handled by the FBReader software. So if you find yourself in a situation (like me!) of having ebooks that cannot be read by FBReader, just use the Calibre converter to convert that ebook. The added benefit of using Calibre is that it also has a ebook reader built-in - so, at a pinch, you can also use Calibre to read ebooks. However, the reader cannot rotate text by by 90 degrees unlike FBReader. There are other features of Calibre that you can use if you like, but my main use is the converter.

Once the two software has been downloaded to your netbook, you need to install them - the process for both being very straightforward. Next, and before starting the programs, decide where to store your ebook file. I use My DocumentseBooks folder for Windows and Documents/eBooks folders for Linux. You can further create sub-folders for each author (like me) or leave all the ebook files under this folder. Next move the ebook files that you have downloaded in zipped or unzipped format (FBReader can handle both) into the folders that you have created. Then start FBReader and, since this is the first time that you have used this reader, you will be presented with a short manual about FBReader - take the time to read it since it also gives you some idea how to start using it. Read the part about setting the book path and make sure that set it to point to your ebook folder. Next try pressing the Rotate Text button (the second-last button on the right) or just press the R key. The text will now be rotated 90 degrees but it will still be in a window - to make it full screen, just press the Enter key. Now your netbook looks more like a book! The Page Down and Page Up (along with the Up Arrow and Down Arrow keys) allows you to navigate through the pages of the book. To go back to windowed mode, press the Enter key again; to rotate the text to its original mode, just press the R key again. To open a book for reading, click on the left-most button and the software will update itself with all the recognizable books in the book path (you did set the book path, didnt you?). Then click on the Show books under the author of the book that you want to read and then the Read book of the book that you want to read. The book will now open and you can now read it! Thats all the keys you require to use FBReader - however, you are free to explore the software.

Thats it - you now own a free ebook reader - free in the sense that you did not have to go out and purchase either hardware or software that enables you to read ebooks.

In my next post, I will describe how to use Calibre to convert between ebook formats and also some idea of where to get free ebooks. Stay tuned!

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Tutorial how to load the 1000 genomes data into Amazon Web Services

 The format of this tutorial is done such that it gives written instructions followed by a picture for that step.

Step 1.
Start by logging into AWS. Once you have done that, you will see this page. Click "EC2" virtual services in the cloud.
Step 2.
Click on "Launch Instance"

Step 3. The next page will say "launch with classic wizard." Just click "Continue."

Step 4. The next page will be titled "Request instances wizard." Just click "community AMIs tab".

Step 5. Next to the Viewing all images drop down field, type in"1000HumanGenomes."

Step 6. Once the AMIs have popped up, click select next to the first one.



Step 7. After that you will be taken to the instance types selection. Click the drop down arrow and select the type of instance you would like to use. I chose "M1 Large."

Step 8. Next you will be prompted to create a password in order to access your AMI. Type your password in the text field shown in the picture.




Step 9. Next you will be prompted with a "Storage device configuration" menu. Just click continue.

Step 10. It will ask you if you want to tag your instance. You can just click continue.



Step 11.

Next you will be prompted to enter your personal key pair. Enter your keypair into the text field marked in the photo.


Step 12.  Next, you will be prompted to enter your security group. Just select the default one.


Step 13. In  Step 13 you will be shown all the specifics you requested in the previous steps. Click Launch if they are all satisfactory.


Step 14. After that, you will be told that your instance is being launched. Click "close."



Step 15. In your instances section, check the Status Checks section. After a while, it should say "checks past."




Step 16.  After that, you are done. If you have a piece of software called Linux bio cloud on a computer with a Ubuntu Linux operating system, you should be able to work with the data!

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Turning an iPhone 1 0 into an iPod Touch

After you buy your iPhone 3Q (via the Apple Core LINK):

AT&T has confirmed that owners will be able to deactivate first generation iPhones to be used as Wi-Fi iPods.

�If the [original] device is not re-activated as a wireless phone after you�ve upgraded to iPhone 3G, it will still work as an iTunes player and can access Wi-Fi,� the spokesperson said.

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Turning Django Form error into plain text in Templates

Django would add an Asterisk before an error message if you do something like this:

{% for fields in form %}
    {{ fields.label_tag }}
    {{ fields }}
    {{ fields.errors }}
{% endfor %}

Which is quite annoying if you are used to working with plain HTML document (AKA the front end guy) like me, we are used to dealing with plain text, not formatted text.

Whereas Django templates render the error messages as unordered lists for us automatically, here is how we may get the plain text version of the error message passed into the template by Python exceptions

{% for fields in form %}
    {{ fields.label_tag }}
    {{ fields }}

    {% for error in fields.errors %}
        {{ error }}
    {% endfor %}

{% endfor %}

Then you will have the plain text version of error in your template, you make wrap the {{ error }} tag with a p or h1 element if you feels like it, then add custom CSS class to the wrapper element.

To render all errors of a form, use

{{ form.errors }}

To render the field name and error message manually in {{ form.errors}}

{% for field, error in form.errors %}
    {{ field }}
    {{ error }}
{% endfor %}

Omit the {{ field }} in the above snippet to render only the message

To render only the error message in {{ form.errors }} and as PLAIN TEXT,

{% for field, errors in form.errors %}
    {% for error in errors %}
        {{ error }}
    {% endfor %}
{% endfor %}

Similarly, when an error message is rendered as plain text, you may wrap it with HTML tags to customize them with standard HTML+CSS codes

Enjoy

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