I used Ubuntu via Live CD  on my lenovo laptop which had Windows 8.1 installed on it. Then I decided to install Ubuntu and while doing that I accidentally click next when it said wipe Windows and install Ubuntu, after which my whole HDD got formatted in some weird partition and all my data (250 GB) got lost.   So I tried putting my HDD in an external case and connecting it to another laptop to recover my data with software like (Get Data Back) but when I connected my laptop HDD to another computer and went to management page to initialize the disk it keeps showing data redundancy error, I've tried every single way to get my HDD showing on windows but its not working. Although it still shows in Ubuntu which means my HDD is in good state, so can someone please tell me how to get my Windows partition back so that I can recover my data ?
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.
How do I get attention for old, unfixed bug reports and feature requests without official responses here on Meta? Does Windows Defender update if Windows Update is set to manual? Series $\frac{x^{3n}}{(3n)!} $ find sum using differentiation Find sum of the series $$\sum_{n=1}^{\infty}\frac{x^{3n}}{\left(3n\right)!}$$ using differentiation. So far I found that $$S(x)+1=S'''(x)$$ but it does not help. Then I tried different interesting ideas  like $$S(x)+S'(x)+S''(x)=e^x-1\,.$$Maybe if I get the third equation it will allow me to construct a kind of differential equation. Then, by solving it, obtain $S(x)$. Proper display of fractions Why can some holodeck matter leave the holodeck, while other holodeck matter (notably people) cannot? I noticed that the reputation from the main site carried over to meta on Gaming (at least the first upvote), I guess that doesn't work the other way around, right?  Is it then impossible to have a meta reputation higher than the site reputation? How to compute $m$ value from RSA if $phi(n)$ is not relative prime with the $e$? Here is some information we got : We know the value of $n$, with size $1043$. We know the value of $p$ (size $20$) and $q$ (size $1023$) as the factors. $e = 65537.$ $\varphi(n)$ = $(q-1)(p-1)$ When I calculated $\gcd$ and $\text{modinv}$, I got : $\gcd(e,\varphi(n)) = 65537$ $modinv(e,\varphi(n)) = 1 $ So we can tell that they are not relatively prime. So, how to compute the d, and get the value of m? I'm not that good with math, so I cant understanding well the theory. so can anyone please make an example implementation or write a clear formula? Prove that if $p \equiv 3 \pmod{4}$ then $x^2+y^2 \not \equiv 0 \pmod{p}$ Let $x$ and $y$ be integers not congruent to $0$ modulo $p$ where $p$ is a prime. Prove that if $p \equiv 3 \pmod{4}$ then $x^2+y^2 \not \equiv 0 \pmod{p}$.   I thought about proving this algebraically and by contradiction. So we say $x^2+y^2 = pz$ and have to show this is impossible. Objective: To separate text column from figures column in every page I don't know if this has been asked before. But so far nothing has come up with my search.  In some books, the figures are placed at the outer side of the page like in the picture below.    Is this achievable in TeX/LaTeX? That is how does one set up the page so that all text will appear in a 'text column' and the figures appear in a 'figures column' in every page? How to force a web browser NOT to cache images Background  I am writing and using a very simple CGI-based (Perl) content management tool for two pro-bono websites. It provides the website administrator with HTML forms for events where they fill the fields (date, place, title, description, links, etc.) and save it. On that form I allow the administrator to upload an image related to the event. On the HTML page displaying the form, I am also showing a preview of the picture uploaded (HTML img tag).  The Problem  The problem happens when the administrator wants to change the picture. He would just have to hit the "browse" button, pick a new picture and press ok. And this works fine.  Once the image is uploaded, my back-end CGI handles the upload and reloads the form properly.  The problem is that the image shown does not get refreshed. The old image is still shown, even though the database holds the right image. I have narrowed it down to the fact that the IMAGE IS CACHED in the web browser. If the administrator hits the RELOAD button in Firefox/Explorer/Safari, everything gets refreshed fine and the new image just appears.  My Solution - Not Working  I am trying to control the cache by writing a HTTP Expires instruction with a date very far in the past.  Expires: Mon, 15 Sep 2003 1:00:00 GMT   Remember that I am on the administrative side and I don't really care if the pages takes a little longer to load because they are always expired.  But, this does not work either.  Notes  When uploading an image, its filename is not kept in the database. It is renamed as Image.jpg (to simply things out when using it). When replacing the existing image with a new one, the name doesn't change either. Just the content of the image file changes.  The webserver is provided by the hosting service/ISP. It uses Apache.  Question  Is there a way to force the web browser to NOT cache things from this page, not even images?  I am juggling with the option to actually "save the filename" with the database. This way, if the image is changed, the src of the IMG tag will also change. However, this requires a lot of changes throughout the site and I rather not do it if I have a better solution. Also, this will still not work if the new image uploaded has the same name (say the image is photoshopped a bit and re-uploaded). Double SOCKS5 proxy using SSH I was searching for a way to connect to one of my servers who is behind a jumpbox via SSH. I was able to do so by running the following command:  $ ssh -tt ptitpou@jumpbox ssh -tt ptitpou@targetserver   Now, I want to be able to use that server to access webservers on targetserver's network. For that, I followed  and I was able to successfully access the websites. The command I used was:   $ ssh -L 127.0.0.1:9999:localhost:9696 -tt ptitpou@jumpbox ssh -D 9696 -tt ptitpou@targetserver   The question I want to ask is how to use the ssh -o ProxyCommand to command in a slightly cleaner way. I tried to put the second part of the command as the proxy command and I had a successful SSH connection, but I was unable to use the proxy after that.   I've also tried  but the command line hangs after connecting to targetserver.  How can I do that? Am I wrong to try to use ProxyCommand option for this task? "Same as I do" or "same as I have" She has the same book as I have.  Isn't it supposed to be She has the same book as I do?  But I often hear the former.  Why? C-3PO frequently speaks of “the Maker.” Is this a true droid religion, or is this a religious reverence by droids for their specific creators (in this case, Anakin, even though C-3PO has forgotten who he is)? Is this even a droid thing or is it just C-3PO? What else do we know about this “Maker”-worship? Mark my own question as favorite? Title is the question itself.  How can I show below without L’Hospital’s Rule  $$ \lim_{x\to \infty} ( 1 + x )^\frac{1}{x} = 1 $$ Is is possible to move all windows (or all not minimized windows) form one workspace to another?   I know I can move one window to other workspace with Shift+Ctrl+Alt+arrow, but it will move only that one focused window. Ubuntu 16.04 wifi not connecting Ubuntu 16.04 wifi not connecting  Wifi not connecting on Ubuntu 16.04. When I go to network settings to turn the wifi toggle on it immediately toggles back to off.   I've tried   $ sudo service network-manager restart   as well as multiple other suggestions but nothing seems to work ...  This is what I got when I typed   $ sudo lshw -C network   into the terminal...  description: Ethernet interface        product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller        vendor: Realtek Semiconductor Co., Ltd.        physical id: 0        bus info: pci@0000:07:00.0        logical name: enp7s0        version: 0a        serial: ec:b1:d7:df:8d:40        size: 100Mbit/s        capacity: 100Mbit/s        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation        configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8107e-2_0.0.2 02/26/15 ip=10.50.18.72 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s        resources: irq:48 ioport:3000(size=256) memory:c3104000-c3104fff memory:c3100000-c3103fff   *-network DISABLED        description: Wireless interface        product: Wireless 3160        vendor: Intel Corporation        physical id: 0        bus info: pci@0000:08:00.0        logical name: wlp8s0        version: 83        serial: 34:e6:ad:9b:9c:63        width: 64 bits        clock: 33MHz        capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless        configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-47-generic firmware=16.242414.0 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn        resources: irq:52 memory:c3000000-c3001fff  I don't think the card is recognised with ifconfig   enp7s0    Link encap:Ethernet  HWaddr ec:b1:d7:df:8d:40             inet addr:10.50.18.72  Bcast:10.50.31.255  Mask:255.255.240.0           inet6 addr: fe80::18b2:f378:6027:7c2b/64 Scope:Link           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1           RX packets:15630 errors:0 dropped:0 overruns:0 frame:0           TX packets:7899 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1000            RX bytes:6370690 (6.3 MB)  TX bytes:1605183 (1.6 MB)  lo        Link encap:Local Loopback             inet addr:127.0.0.1  Mask:255.0.0.0           inet6 addr: ::1/128 Scope:Host           UP LOOPBACK RUNNING  MTU:65536  Metric:1           RX packets:2709 errors:0 dropped:0 overruns:0 frame:0           TX packets:2709 errors:0 dropped:0 overruns:0 carrier:0           collisions:0 txqueuelen:1            RX bytes:217671 (217.6 KB)  TX bytes:217671 (217.6 KB)   but I think it's recognised in $ sudo lspci -vnn    08:00.0 Network controller [0280]: Intel Corporation Wireless 3160 [8086:08b3] (rev 83)     Subsystem: Intel Corporation Dual Band Wireless AC 3160 [8086:8070]     Flags: bus master, fast devsel, latency 0, IRQ 52     Memory at c3000000 (64-bit, non-prefetchable) [size=8K]     Capabilities: [c8] Power Management version 3     Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+     Capabilities: [40] Express Endpoint, MSI 00     Capabilities: [100] Advanced Error Reporting     Capabilities: [140] Device Serial Number 34-e6-ad-ff-ff-9b-9c-63     Capabilities: [14c] Latency Tolerance Reporting     Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014      Kernel driver in use: iwlwifi     Kernel modules: iwlwifi  Edit: $ rfkill list prints   0: acer-wireless: Wireless LAN     Soft blocked: yes     Hard blocked: no 1: phy0: Wireless LAN     Soft blocked: no     Hard blocked: no 2: hci0: Bluetooth     Soft blocked: no     Hard blocked: no   I'd greatly appreciate any help, Thanks in advance. How to change plot style or other options after it was created I seem to be having issues when I try and save the output file as a .png, or .jpeg for that matter. I've set up my user preferences, File, Render Output to my desktop as well as render output in the editor window. What am I missing here? I'm obviously very new to this program and your help would be appreciated. Thanks for your time Getting the class name of an instance? How do I find out a name of class that created an instance of an object in Python if the function I am doing this from is the base class of which the class of the instance has been derived?  Was thinking maybe  might have helped me out here, but it doesn't seem to give me what I want. And short of parsing the __class__ member, I'm not sure how to get at this information.