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On Fri, 26 Dec 2003 21:35:13 -0500, "Frank Incensed"
<frankincensed_at_hotmail.com> wrote:

>
>would the battery deal cause that crazy error msg.
>HD register error
>SC1 (85) 227
>SN1 (170) 0
>SC2 (170) 18
>SN2 (85) 211

Once the operating voltage drops below that which the logic requires to
operate, it is no longer "logical". The logic inside the chips can assume
nonsensical states that mean nothing. The only thing that means anything is
the presence of the message(s), indicating that the HD isn't getting enough
power to properly operate.

The real risk is that in the process of scrambling, the hard drive logic may
randomly fire the write head. This could occur anywhere, since by definition,
the logic is illogical during an undervoltage. It could fire during a random
head movement, between sectors or on top of valid data. If you're lucky, the
hard drive only needs reformatting. If servo information gets wiped, the
drive is toast. This is something to avoid if at all possible.

John

---
John De Armond
johngdDONTYOUDARE_at_bellsouth.net
http://bellsouthpwp.net/j/o/johngd/
Cleveland, Occupied TN

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