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Old 06-10-2004, 04:16 AM   #1 (permalink)
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Default hard disk read/write head

Hi
I read some place that
"When a disk is in use, the head remains over the last track which was written or read. As long as the computer is on, any physical shock to the computer can make one or more of the read/write heads touch down on the track, causing data loss. "

"If you prefer to leave your computer on, use a headparking program to park the heads before your leave. This is even more important if your computer is located on the floor(which is not recommended!)."


my computer, both at work and home, is on the floor, is that really bad
often when my computer is on, i push it slightly to the left or the right, or just move it slightly when plugging or unplugging something.
has this messed up the hard disk in any way?
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Old 06-10-2004, 06:19 AM   #2 (permalink)
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It shouldnt be any problem unless u drop the HDD or suddenly turn the power off while the HDD is running.
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Old 06-10-2004, 06:33 AM   #3 (permalink)
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so what is with the head-parking program ?

i had never heard of it till yesterday !
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Old 06-10-2004, 11:10 AM   #4 (permalink)
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I read about this in the A+ book somewhere. this only applies to old hard disks where you had to manually park the head. for modern hard disk this is not something to worry about. they can take a good shock without being damaged unless maybe you hit it hard while it's reading or writing. so where did you read this?
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Old 06-10-2004, 11:58 AM   #5 (permalink)
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most newer hard drives just automatically shut them selves off when the computer is being moved with it running. When they shut them sefls off your screen will turn blue and you will get an infinite loop error, i think is what it is.
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Old 06-10-2004, 03:59 PM   #6 (permalink)
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I agree with ekÆsine on the hard drive question.

The primary reason to keep your PC OFF the floor is that when you place in on the floor, it has a tendenancy to collect dust rather fast - especially if you have carpet floors. Most PCs have a vent on the front where the dust can enter and start to accumulate inside. I keep mine a few inches off the floor.
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Old 06-10-2004, 04:07 PM   #7 (permalink)
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i read it in a book "exploring and upgrading your pc", it is pretty old, talks in terms of 486's & P1s, but a lot of what they say still holds true.

hey now that we have gone for the LBA addressing scheme. we still got cylinders, heads and sectors, right?
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Old 06-10-2004, 05:08 PM   #8 (permalink)
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so with the new drives is the head still floating?

you guys are real pros
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Old 06-11-2004, 05:00 AM   #9 (permalink)
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but with the PC on, the head is not parked, right?
and ithe head floating?
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Old 06-11-2004, 12:53 PM   #10 (permalink)
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Quote:
Originally posted by didi
It shouldnt be any problem unless u drop the HDD or suddenly turn the power off while the HDD is running.
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