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Diky



Joined: 02 Oct 2004
Posts: 22
Location: near myself

PostPosted: Thu Feb 01, 2007 7:44 am Reply with quoteBack to top

Well it's time to another of my impossible-useless-wasting time experiences:
Yesterday i tried an old Laptop. Ok turn on, Bios post and at that point HD starts rattle rattle rattle HD failure... Ok let's start again, same as before. I remembered same behaviour with another HD but in that case after an unpredictable number of restart it works again. I take HD and put it on freezer like a read somewere, well it doesn't works anyway but trying many many times the miracle happened rattle rattle CLICK! After that click HD seems to work perfectly. I believe it's caused by leak of magnetization due
to long time inactivity, but i'm curious if anybody has another thesis. Thanks.
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ryan



Joined: 19 Apr 2006
Posts: 261
Location: WisConSin

PostPosted: Thu Feb 01, 2007 9:27 pm Reply with quoteBack to top

Bad landing zone or bad parking mech
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harshbarj



Joined: 01 Oct 2004
Posts: 168
Location: behind you!

PostPosted: Fri Feb 02, 2007 1:49 am Reply with quoteBack to top

sounds like the head was stuck. I have had heads on mfm drives get pulled off on startup. ide drives generally just need a good fast twist to un-stick them. Now if it was a fairly new drive I'm not sure of the cause as they lift the heads off the drive and can't stick.

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Puckdropper
Site Admin


Joined: 02 Oct 2004
Posts: 761
Location: Not in Chicago

PostPosted: Fri Feb 02, 2007 2:56 am Reply with quoteBack to top

Hard drives work best with their platters parallel to the ground, not off at one angle or another. I had one system that wouldn't start with the platters in the drive perpendicular (90 degrees) to the floor, but when I turned it so the platters were parallel with the floor it ran fine.

Motors do wear out, and the MTBF for older hard drives is not great. One 1 gig Maxtor I had had a MTBF of just over a year of continual running.

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Erik



Joined: 28 Feb 2006
Posts: 121
Location: LI, NY

PostPosted: Wed May 02, 2007 7:30 pm Reply with quoteBack to top

Sorry to sound stupid, MTBF?

By the way, I noticed the older Dells and some Compaqs liked to put the drives at 90 degree angles in the cases... (esp. when they still used the IBM Deskstars. *GAG*)
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T-R-A



Joined: 02 Oct 2004
Posts: 579
Location: Western NC

PostPosted: Thu May 03, 2007 6:17 am Reply with quoteBack to top

MTBF

Mean Time Between Failures:

http://www.webopedia.com/TERM/M/MTBF.html
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Erik



Joined: 28 Feb 2006
Posts: 121
Location: LI, NY

PostPosted: Wed May 16, 2007 6:52 pm Reply with quoteBack to top

Ah... thanks.

Apparently Linux "wtf" program doesn't know that one. Razz

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