I wanted to get rid of Windows so I made bootable USB and installed Ubuntu but what I see now is I have only one disk "Computer" which has 290GB free and 4.5 GB used . In Windows I had 3 disk namely C , D and E . I had important data on D and E . Anyone can help me how to recover it ?
I have a Toshiba satellite A-200 laptop with a Vista OS on it with 4 NTFS partitions  (C:) Vista  (D:) Entertainment  (E:) Work  (F:) Sources   and I wanted to start using Ubuntu instead. So I tried it first from the live CD and everything was OK and all the partitions were shown and working and so I decided to install Ubuntu to replace Vista on the (C:) drive. After I did that I can no longer find my folders and files on the (D:), (E:), (F:) partitions and the only file system that is shown is one 198 GB although my HDD is 320 GB.  I can't access the lost data on the remaining 120 GB which I hope is still there and not totally lost  I am now working from the live CD but I am unable to install testdisk. Can I recover the Vista partitions by the product recovery CD to get my laptop back to the factory settings? Can I recover the NTFS partitions using a recovery program for Windows or will that make the problem worse?   I need these data badly as I don't have a backup for them.
I have been using and making LED flashlights for years now and I am VERY familiar with all of the circuitry and technology inside of them, but I just got my first LED house light bulb that runs off of 110v AC electricity.  It is very similar to a flashlight - it has a large heatsink, and 1 or more LEDs inside of it (brand and specs of emitters, I do not know).  The part that I am most curious about is how the electricity from the socket gets to the emitter.  In a flashlight the power comes from a DC battery through a current regulator (LED driver) and into the LED itself.  This is not difficult because the voltage of common LED emitters is about the same voltage as Lithium batteries (3.7v, 7.4v, etc) which makes the current limiting relatively simple coming from a one or two cell light.  How does this work for a high voltage AC bulb?  Is there a transformer and rectifier inside of EVERY bulb (I sure hope not), or are the emitters manufactured to run off of 110v AC power and just use half of the wave cycle? Export Windows 7 search results to a text file Is it ok to ask to explain a certain piece of code on SO? Is it OK to ask on SO for help in explaining someone else's working piece of code, from Open Source projects or library examples etc.? Or does this belong somewhere else? Why does adding red light with blue light give purple light? Capitalization of explanation of abbreviations How does Incense work? Coming from Eclipse and having been used to duplicate lines all the time, it's pretty strange finding out that Xcode has no such function. Or does it?  I know it's possible to change the system wide keybindings but that's not what I'm after. Is there a built-in checksum utility on Windows 7? Is there a built-in checksum/hash utility on Windows 7? Multi-core vs Multi-CPU I am requesting a new server from our Server team. Which is better for SQL Server performance: 2 CPUs with 8 cores per CPU or 1 CPU with 16 cores? Recover data from SD card A star's collapse can be halted by the  due to the Pauli exclusion principle. In extreme relativistic conditions, a star will continue to collapse regardless of the degeneracy pressure to form a black hole. Does this violate the Pauli exclusion principle? If so, are theorists ok with that? And if it doesn't violate the Pauli exclusion principle, why not? Why is time special? In Special Relativity, the spacetime interval between two events is $s^2 = -(c{\Delta}t)^2+({\Delta}x)^2+({\Delta}y)^2+({\Delta}z)^2$ giving the Minkowski metric $\eta_{\mu\nu}=\text{diag}(-1, 1, 1, 1)$. What is the justification for making time have a negative coefficient, and how closely is that related to the 2nd law of thermodynamics? Sure, by letting $\eta = \text{diag}(1, 1, 1, 1)$, we get a pretty boring spacetime, and the boosts in the Poincaré group become trig instead of hyperbolic functions, but what's the physical reasoning behind this? How to set an image as a background for Frame in Swing GUI of java? Does anyone know of a script that can select all text references to URLs and automatically replace them with anchor tags pointing to those locations?  For example:  http://www.google.com   would automatically turn into  &lt;a href="http://www.google.com"&gt;http://www.google.com&lt;/a&gt;   Note: I am wanting this because I don't want to go through all my content and wrap them with anchor tags. Proof that $\suṃ̣_{k=1}^{n}k {n \choose k}$ for $n \in \mathbb N$ is equal to $n2^{n-1}$.  As a hint I got that $k {n \choose k} = n {n-1\choose k-1} $.  I tried solving this by induction but, in the inductive step I'm not arriving to the correct result. I was getting the usual 4-8mbps in 12.04 when copying files via usb sticks. However after upgrading to 12.10, I only get 200-300kbps when I try to perform the same operation.   I have tried different usb sticks (which work flawlessly on Windows 7) and still experience the same issue. I experienced the same issue sometime ago on 11.10 but everything was normal when I upgraded to 12.04 so it might be a kernel issue.  Here's the output of dmseg |tail:      mysterio@mysterio-HP-Pavilion-dv6700-Notebook-PC:~$ dmesg |tail   [  871.023093] sdb: sdb1  [  871.026909] sd 5:0:0:0: [sdb] No Caching mode page present  [  871.026920] sd 5:0:0:0: [sdb] Assuming drive cache: write through  [  871.026927] sd 5:0:0:0: [sdb] Attached SCSI removable disk  [ 1036.226206] ISO 9660 Extensions: Microsoft Joliet Level 3  [ 1036.233561] ISO 9660 Extensions: RRIP_1991A  [ 1086.342973] ISO 9660 Extensions: Microsoft Joliet Level 3  [ 1086.343010] ISO 9660 Extensions: RRIP_1991A  [ 1173.971357] ISO 9660 Extensions: Microsoft Joliet Level 3  [ 1173.971441] ISO 9660 Extensions: RRIP_1991A   I have updated my system with the latest updates. What could be wrong? How to remove items from a list while iterating? How to split a very long equation (using AMSMATH package)? Search and download audio-only from youtube Is there a way to search and then download from YouTube, with the situation that I only need to download the audio only, not the video. I'm using Emacs with AUCTeX to do all my LaTeX. When it comes to syntax highlighting it seems that all mathematics is by default just orange. Do you know of a mode or package that adds some more fine grained syntax highlighting? For example all commands (\foo), matching braces, sub- and superscripts, etc. should get a different color.