When you eject an internal HDD, does it save battery life on a laptop?

By lieiti ·
Not really an issue to solve, I am just curious as to whether or not if you "eject" an internal drive from your OS, does it actually spin down, thusly saving you power / battery life?

I am planning on adding a second HDD be replacing my optical DVD drive with one, but am a bit concerned as to my laptop's battery life afterwards. I don't want it dramatically reduced of course. It would be nice if I could just eject it via disk utility (OSX), and then mount it whenever I need it to extend batt. life.

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Though the hard drive isn't a big juice drinker, it could help

by Slayer_ In reply to When you eject an interna ...

Depends if once ejected, does it stop getting power. Setting a very short power down time in your power settings might work better. I don't know where those settings are in OSX.

The screen actually drinks the most juice at idle, turn down the screen brightness to extend battery life (sometimes by almost double)

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