ACTIVATE FREE WHATSAPP VIDEO CALL

Whatsapp introduced free calls to other whatsapp users last year. Now video call feature is coming to whatsapp. Its not rolled out to all users right now. Whatsapp Beta users can test free video call option in latest version of whatsapp beta.
To activate free video call in whatsapp

1. Download latest version of whatsapp beta from this link whatsapp beta
2. Install it
3. Now when you click call button , two options will show to select. Normal call and video call
4. select video call to make free whatsapp video call

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DISABLE DISK CHECK DURING BOOT

Disk check utility is a very useful tool to scan and fix disc errors. But sometimes it comes during each boot and you may want to disable it.
To disable disc check during boot, just open command window ( start- > run-> and type cmd )
Type  chkntfs /x d: e: (change drive letter as you want )
Press enter . Restart your computer and check.


Codes mentioned below will be usefull if you want to revert

chkntfs drive: [...]
   chkntfs /d
   chkntfs /x drive: [...]
   chkntfs /c drive: [...]

     drive:         Specifies a drive letter.
     /D             Restores the machine to the default
                    behavior; all drives are checked at boot
                    time and chkdsk is run on those that are
                    dirty. This undoes the effect of the /X
                    option.
     /X             Excludes a drive from the default boot-time
                    check. Excluded drives are not accumulated
                    between command invocations.
     /C             Schedules chkdsk to be run at the next
                    reboot if the dirty bit has been set.
    

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