Does iBook Hard Drive: Toshiba MK4025GAS have shock protection?

does the Toshiba MK4025GAS hard drive have the thing where, if you move the computer, the drive mounts and stops spinning to prevent damage?
oh yeah, this is the drive in my ibook g4.

Hey LLL&D and Welcome to Apple Discussions,
does the Toshiba MK4025GAS hard drive have the thing where, if you move the computer, the drive mounts and stops spinning to prevent damage
This is from a post by simie in macrumors.com:
"SMS only exists on iBooks built after July 26, 2005. These iBooks are either 1.33GHz or 1.42GHz. All 1.42GHz iBooks have SMS. Only 1.33 GHz iBooks with a scrolling trackpad, 512MB RAM (stock), and 40GB HDD (stock) have SMS."
And an explanation of how it works by mkrishnan Demi-God (Moderator) in mac-forums.com:
"Well...there are two things. There's the motion sensor. But the hard drive itself is just a normal hard drive. All hard drives can be commanded to "park" their read/write heads. A hard disk works by a magnetic probe/sensor floating over the disk as the disk spins. It can read the HD by reading the magnetic state of the block underneath it, and when a potential is applied, it can change the magnetic state.
Anyway, hard drives often get damaged because this head crashes into the disk and causes physical damage and/or misaligns itself. Parking essentially pulls the head out of the way so this can't happen as easily.
When the motion sensor detects the motion, the software or motherboard or whatever commands the disk to park, and it does. But the hard disk unit itself is identical to any other 2.5" hard disk, and it's mounted in the same way"
I also wondered about this and knew it was in the later iBooks but wasn't sure which ones.
Richard

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chaemo
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Does iBook Hard Drive: Toshiba MK4025GAS have shock protection?

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