How To Recover Disappeared/Hidden Files & Folders From Pen-Drives,Hard-Disks Due To Virus

Hello My Dear Friends,

I'm Sujoy, and today I'll tell you how to recover your files/folders from pen-drives(flash drives),hard disks,memory cards which got disappeared/hidden due to virus or some other reasons. Remember,this trick can't recover files/folders which disappeared due to file system errors or disk crashes.

Yesterday,my friend brought his 2TB Seagate external hard disk to me,complaining that some of his folders are not showing in windows explorer,but total used space hasn't decreased.

Then I opened my favorite Command Prompt and fixed the problem! How? Explained below-

1. For Windows Vista,Windows 7 and Windows 8 users,connect the pen-drive or hard-disk to your pc and double click to open it,as usual; or right click on the drive from My Computer,then select explore.

Then press & hold the SHIFT key and right click on any blank area & select "Open command window here", a command prompt window will open.

For Windows XP users,press & hold Windows key,then press R key, ie, Windows+R. Type cmd and press enter,command prompt will open. Then type device's drive letter followed by a colon. 

Example- H:    ,as my pen-drive is now H drive.

2. Then type this command attrib -s -h -r  and press the TAB key. Each time you press the TAB key,a new folder name will appear beside the attrib -s -h -r command. When you see your desired folder name,which got hidden,press enter key,the selected folder will be visible & will appear in the explorer window. If not,just refresh the drive window,by F5.

For example,a folder named "project" got hidden on my 4GB pen-drive. You can see in the screenshot,no folder is visible on pen-drive,but used space is 439MB.

Then I'll open command prompt and type attrib -s -h -r   and press TAB. I'll see folder named Project appeared on screen beside attrib -s -h -r. I'll now press ENTER. And magic!! The folder project will appear on pen-drive! Now I can double click it and see the contents!!

One tip- Fully scan your pc with a good and most importantly,UPDATED Anti-Virus after that,so that such problem doesn't appear again.

So,this was for now,next time I'll come with a more exciting & useful tutorial for you. How was this tutorial,let me know!

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How To Install & Configure Java JDK On Your Computer?

How to enable your computer for java programming?

First,download Java Development Kit(JDK) form one of the following addresses-

http://www.oracle.com/technetwork/java/javase/downloads/index.html

http://download.cnet.com/Java-Development-Kit-32-bit/3000-2218_4-12091.html

http://download.cnet.com/Java-Development-Kit-64-Bit/3000-2218_4-75317068.html

http://java-development-kit-jdk.en.softonic.com/

Double click the downloaded file(in our example,it should be named as  jdk-7u6-windows-i586.exe) and follow the installation process,there will be two installations,one for the JDK, another is JRE(Java Runtime Environment).

After the installation,go to Command Prompt by pressing Windows Key+R. Type java -version and hit enter,it'll show interpreter's version. Then type javac -version and hit enter. If the javac command completed successfully then you don't have to follow the steps below. But,if you get an error like this-  'javac' is not recognized as an internal or external command,operable program or batch file ,then do the following-

Go to Start -> Control Panel -> System -> Advanced System Settings -> Environment Variables, select the system varable named "Path" and click the Edit button. Add the address of java's bin sub-directory at the end of the list in the Variable Value field(in our example C:\Program Files\Java\jdk1.7.0_06\bin) then click the ok button.

To test the environment open command prompt by pressing Windows Key+R.

Type java -version and hit enter to see interpreter's version number.

And type javac -version and hit enter to see compiler's version number.

Both the versions should match. If it matches,you're ready to do java programming!

Note: Other than java programming,if you install the jdk,you'll be able to run java-archives(i.e .jar files) on your computer! There are plenty of java applets(small applications) are available on the internet for free! Also java is needed for surfing various internet sites.

That's all!

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And most importantly,don't forget to visit my youtube channel at-

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I've uploaded many videos about calculator tricks,math and engineering tutorials,electronics DIY projects,technology how-to videos,funny animal videos,travel videos etc in my youtube channel.

Thanks for reading!

Windows 7 Not Detecting External Hard Disk_Solved!

Hi friends,

Last week,I brought my friend's Seagate 2TB external hard disk to backup some files on my computer. That hard disk runs on 9v ac adaptor,connect the adaptor to ac 220v supply,and connect usb port to pc and work. I connected the adaptor to mains,and usb to my Acer Aspire One h532 netbook,led light on harkdisk glew,my windows 7 given regular "ping" sound confirming that it has detected the harddisk,but the device is not showing on My Computer! I waited for few minutes,tried refreshing my computer,still no signs of harddisk! I connected the harddisk to another desktop computers having Windows7 and Windows XP,it worked for both. I again tried connecting the harddisk to other two usb ports on my netbook,didn't help! Then I ran my genius brain ;-) and solved the problem! Here's how-

Right click on "computer" (previously called my computer),choose "manage", choose "device manager",expand "universal serial bus controller",select your problematic device(in my case,it was named 'external'),right click on it,and select "uninstall". After the uniinstallation process,.disconnect the device from your computer and restart your computer. Now after restart,reconnect your device,this time windows should detect your device and and automatically reinstall required drivers for it,you can see the progress in taskbar.

If this trick does not work,and you're confirmed that the device is ok,you can perform a "system restore" from "start menu",type 'restore',and choose "system restore",and follow the on screen instructions,in Windows7.


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Thanks for reading!