Moodle, IT and me

I don’t know why, but yesterday my Time Machine external hard drive would not show up in the finder, neither being detected by Disk Utility. However on a linux machine, I could “see” the hard drive, and the lighting LED indicated it was still working. To display it again I had to enter the following line in a Mac console:

defaults write com.apple.finder AppleShowAllFiles TRUE

Then restart, the hard drive should be displayed. Set it back to FALSE. Then restart a final time.
Hope this post will help some people.