> I dragged my presented HDD to LaCie icon.

You've gotten the facts, now here's the reason...

You cannot create a bootable backup with drag & drop, because the many invisible support files that are the underpinnings of OS X do not get copied as part of the d&d process.

The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire