Fist we need add some repositories. Since Raspbmc do not allow the addition of new repository directly and hence do the following.
sudo apt-get install software-properties-common python-software-properties
sudo apt-get update
Now we can try below command
sudo echo deb-src http://debian.yeasoft.net/btsync wheezy main contrib non-free >> /etc/apt/sources.list.d/btsync.list
sudo apt-get update
sudo apt-get install btsync
Note that if you get permission errors on the sources.list.d file, try editing the file manually with Nano:
sudo nano /etc/apt/sources.list.d/btsync.list
and paste in these lines.
deb http://debian.yeasoft.net/btsync wheezy main contrib non-free
deb-src http://debian.yeasoft.net/btsync wheezy main contrib non-free
save and close the file followed by update.
sudo apt-get update
Sudo apt-get install btsync
Once btsync installation is started - choose the user - "pi" and group - "default"
After the installation of btsync grant read write permission on the external drive.
sudo chmod -R 777 /media/Ankit/
sudo chown pi /media/Ankit/
Open the btsync webpage with URL http://my_Pi_IP:8888/gui
