SMS and Hard Disk Replacment

[finalcoolman]

Wondering, if I ever decide to replace the iBook's (still in the mail) hard drive with a faster 5200 or 7200 RPM drive, will I lose SMS? Is this feature (ie. sensor) built into the harddrive (meaning you'l lose SMS), or is it a separate controller that shuts down the hard drive (meaning you can use any hard drive and keep SMS)? Just wondering.

P.S. Who makes Apple's notebook hard drives?

 

[superbovine]

Wondering, if I ever decide to replace the iBook's (still in the mail) hard drive with a faster 5200 or 7200 RPM drive, will I lose SMS? Is this feature (ie. sensor) built into the harddrive (meaning you'l lose SMS), or is it a separate controller that shuts down the hard drive (meaning you can use any hard drive and keep SMS)? Just wondering.

P.S. Who makes Apple's notebook hard drives?

toshiba is in my powerbook.

there is about 10-20% difference in hd performance between 5200 and 7200. i believe it is a 10% difference on battery usage. you can search the forms for that answer.

On the SMS? Are you sure you are talking about the correct thing? I have never heard of an SMS controller. There only TLA (three letter acronym) that i have heard that relate to the computer industry in general is:
SMS = small message service
SMS = Sega Master System
SMS = System Management Server
SMS = Standard Modular System

do you mean S.M.A.R.T. controller?

 

[ITASOR]

toshiba is in my powerbook.

there is about 10-20% difference in hd performance between 5200 and 7200. i believe it is a 10% difference on battery usage. you can search the forms for that answer.

On the SMS? Are you sure you are talking about the correct thing? I have never heard of an SMS controller. There only TLA (three letter acronym) that i have heard that relate to the computer industry in general is:
SMS = small message service
SMS = Sega Master System
SMS = System Management Server
SMS = Standard Modular System

do you mean S.M.A.R.T. controller?

He means the sudden motion sensor. Not sure if you will loose it or not.

 

[superbovine]

that controller isn't on the hard drive, and would be quite expensive to design hard drives just for the power book.

http://www.kernelthread.com/software/ams/

Apple added a feature called Sudden Motion Sensor (SMS) to the PowerBook line in early 2005. The senso attempts to prevent data loss by parking the heads of an active disk drive after detecting a "sudden motion" which could be due to strong vibrations or a fall

The SMS is also called th Mobile Motion Module. The Mac OS X kernel refers to it as "ams", for Apple Motion Sensor. Hereafter, we use the term "AMS" to refer to both the hardware and its software abstraction.


AMS is an integrated feature of the main logic board, and is not tied to a specific disk drive. It is yet anothe Inter-Integrated Circuit ( 2C) device added to Apple's hardware repertoire. Examples of other I2C devices used by Apple include fan controllers, temperature monitors, voltage monitors, and so on.

 

[finalcoolman]

that controller isn't on the hard drive, and would be quite expensive to design hard drives just for the power book.

http://www.kernelthread.com/software/ams/

So in other words, you would not lose the feature by swapping the hard drive?

 

[superbovine]

So in other words, you would not lose the feature by swapping the hard drive?

yes, if you read the bold print, it says it is on the logic board.

 

[dcv]

Who makes Apple's notebook hard drives?

You should be able to find this in System Profiler.
My rev D PowerBook has a Fujitsu hard drive.