When Time Machine isn’t Working in Yosemite

My Time Machine isn't working on Yosemite OS

I have recorded how I upgraded my Mavericks based Mac to Yosemite newest OS which was released not too long ago.

However, right after I upgraded, I found a strange thing happening with my Time Machine.

My Time machine isn’t working anymore. When I plugged in my external hard drive to my Mac, it was detected on Finder, (if not, this link might help) but it was circle-ing all the time, and in my menu bar on the top right, showing “Preparing Backup” or “Backing Up from xx to xx GB”, it takes forever than usual.

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How to retrieve unsaved TextEdit .txt files

TextEdit inside applications

At the beginning of this week, I accidentally closed my TextEdit, and forgot that I actually still need the txt file that I have just created.

After looking around on Google, and try one by one method (example looking in a directory of Library like this here) that I have found, this one actually works for me.

I am not sure with a .rtf file, but this at least works with .txt file.

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