In case your hard drive is damaged or corrupted then it is better to have functional copy of the drive where you can store your stuff immediately. Cloning a drive is a good option for handling such situations. Have a look on this tutorial.
"The resource is made up of five complete projects (7 hours+) that provides detailed guidance, taking your students from that very first piece of coding to five fully functional games.
This also includes the latest Scratch 2 features that includes cloning and writing custom code modules.
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I'm going to keep gushing about Glitch some more, and not only because it allows me to finallyt play in the band with Jim and Brian and others. First, try this drum machine, then, have a look at the code, and then, realize that you could clone it and make your own in about as long as it took me to type these words. Upload it to GitHub and share with your friends. Making apps is becoming as simple as making websites was in the 1990s. It took a bit for the idea to catch on, but when it did... (p.s. remember the 'blink' tag and Geocities websites? This home page might be the 21st century equivalent.) Text copied from Stephen Downes OLDaily