Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

be300test

macrumors member
Original poster
Nov 7, 2008
63
0
Hi,

i have noticed the sudden motion sensor is still active when a ssd is installed. i have disabled mine.

there would be no need for it if you have a ssd....looking for some input on it.

anyone who wants to disable it use : sudo pmset -a sms 0

use : pmset -g

check and make sure sms = 0

backup before you do it.
 
Out of interest, has anyone with an SSD tried shaking their computer around while playing video or music? Does the SMS actually cause problems with an SSD?
 
I`d like to know about this too, I have not disabled the SMS since installing my SSD.
Should I or does it make no difference?
Any advice appreciated.
 
I`d like to know about this too, I have not disabled the SMS since installing my SSD.
Should I or does it make no difference?
Any advice appreciated.

Having it on makes no sense, it only bottlenecks your system.
The SMS stops the head, on a regular HDD, if it detects too much movement that may harm the drive. Since an SSD has no moving head, or any moving parts, the SMS simply clicks on for no reason. It's a waste. Turn it off if you're using an SSD.
 
Last edited:
Having it on makes no sense, it only bottlenecks your system.
The SMS stops the head, on a regular HDD, if it detects too much movement that may harm the drive. Since an SSD has no moving head, or any parts, the SMS simply clicks on for no reason. It's a waste. Turn it off if you're using an SSD.

Thanks for that, off to disable my SMS now...:)
Edit: Done. My first Terminal foray has been a success.
 
Last edited:
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.