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Thread: Killed my on-board 250G shock laptop drive

  1. #1
    Low Bitrate spectrumzz's Avatar
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    Killed my on-board 250G shock laptop drive

    So I manged to kill a Fujistu MH2030AT laptop drive with fluid bearing. When I say "kill", I mean that I have managed to make the drive flake out under hard driving of my car... I thought with a shock rating of 250G (half-sine), the drive would be fine sitting on a sheet of air padding. I was wrong. The drive still works ok when it's sitting on a desk, but it has become very weak when the car is in motion.

    What I noticed is that what causes drive failure for me is very hard turns (ie. opposing the plane of head seeking), close to 1G while riding over a rough surface. I will probably change the next drive to be 90 degrees from the plane of the road, but I still don't see how that is going to stop the head from bouncing off the platter.

    Anyway, hopefully this will help people who have been asking "will my HD be ok in the my car" and the answer is: if you mount a shock-resistant 2.5 drive flat, with shock absorption, in a car with a rock hard suspension and good lateral grip, you WILL probably kill it.

    Next experiment: mounted vertical with no shock absorption at all.


  2. #2
    Registered User mpattonm's Avatar
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    This is the reason why I am going to use 256
    MB CompactFlash card instead of HDD - just for OS - and have all the media and hopefully nav. data loaded from CD or DVD media on demand.

  3. #3
    Constant Bitrate Magnezium's Avatar
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    Mpattonm, that's exactly what I'm doing, accept, the OS will run Disk On Chip so that the boot up time is almost nothing. But it will get all the settings (the written data) from a CP flash card, while all media will be on CD/DVD or other removable disks.

    Spectrum. I don't know too much about kenetics, momentum, and enursia, but try mounting the HDD 45 degrees instead of 90. I'd imagine (unless you live in areas where there are many pot holes) you would split the wear and tear on the drive 50% depending on accelloration and turning. Turning at 1G should be cut in half at 45 degrees. But I could be wrong. Anyone agree or disagree?

    Mg
    Just your friendly neighborhood computer specialist.

    2002 Pontiac Trans Am WS.6
    Silver/Black
    Looks like new... Wanna know why they call me "Crash"?

  4. #4
    Registered User mpattonm's Avatar
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    Quote Originally Posted by Magnezium
    Mpattonm, that's exactly what I'm doing, accept, the OS will run Disk On Chip so that the boot up time is almost nothing. But it will get all the settings (the written data) from a CP flash card, while all media will be on CD/DVD or other removable disks.
    What size will you DOC have? And - what OS have you chosen? I am currently experimenting with WinME which I have stripped to 110 megs. 150 megs including MediaPlayer, DX9, BlueTooth stack and Mozilla.

  5. #5
    Constant Bitrate Magnezium's Avatar
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    I'm planning on using XPe. However, not sure. I know that with XPe, I can get the footprint down to about 30MB with my media program installed (Haven't named it yet.) However, the DOC will probably be 128MB just in case. I might end up installing some 3rd party software (I doubt it, but it's possible) so I want to keep my options open.
    I don't like WinME because it has problems, but if you're using a read-only disk, it's possible it will work just fine with out errors. It's the writing to the OS that screws it up so fast. XPe, is faster and a lot more stable. I recommend not using the Explorer Shell and use your media players executable for the shell. It will signifigantly help WinME, that is unless you use more than just one program.

    Mg.
    Just your friendly neighborhood computer specialist.

    2002 Pontiac Trans Am WS.6
    Silver/Black
    Looks like new... Wanna know why they call me "Crash"?

  6. #6
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    I drive the car pretty hard and take pretty tight turns at times, now I am worried about mounting the pc into the car now lol It appears there is really no consensus on how to mount these hard drives. I've used a laptop in the car many times, either left it on the floor or just in the seat and it still works fine. Been doing it for about a few months now and it is still ok.

    And this is in NYC with all the huge *** potholes all over the place.

  7. #7
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    Quote Originally Posted by Magnezium
    I'm planning on using XPe. However, not sure. I know that with XPe, I can get the footprint down to about 30MB with my media program installed (Haven't named it yet.) However, the DOC will probably be 128MB just in case. I might end up installing some 3rd party software (I doubt it, but it's possible) so I want to keep my options open.
    I don't like WinME because it has problems, but if you're using a read-only disk, it's possible it will work just fine with out errors. It's the writing to the OS that screws it up so fast. XPe, is faster and a lot more stable. I recommend not using the Explorer Shell and use your media players executable for the shell. It will signifigantly help WinME, that is unless you use more than just one program.

    Mg.
    How do you obtain WinXPe? Also is there a good place to buy DOC and what would be a major difference between DOC and CF?

    Thanks.

  8. #8
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    Mebbe you should change your driving habits to more sensible and "cool" ways
    I don't need no stinkin' startup-shutdown controller... That's what journalized filesystems are for...
    NavSys, the ultimate navigation app
    http://www.navsys.org/

  9. #9
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    I ran an 800 MB flash drive for the last year but just a week ago it died. Too bad because it worked great until then. Be wary of the number of reads/writes to flash memory.

  10. #10
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    Talking

    Quote Originally Posted by az1324
    I ran an 800 MB flash drive for the last year but just a week ago it died. Too bad because it worked great until then. Be wary of the number of reads/writes to flash memory.
    Well every drive works great. That is until it dies.

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