- about hdd bad sector
- Posted by extreme on July 26th, 2003
i downloaded the program powermax from maxtor.com to fix my hdd bad sectors.
it worked. but what im interested is that how does it fixes them?? isnt bad
sectors physical problems on hdd?? and i don't think my hdd space went
smaller.
thanks.
- Posted by Rod Speed on July 26th, 2003
extreme <extreme@iinet.net.au> wrote in message
news:3f22340f$0$23608$5a62ac22@freenews.iinet.net. au...
Basically by using the spares.
Usually, but not always. You can get one with a power glitch etc.
Yeah, because there were enough spares.
Make sure you backup what you'll slash
your wrists if you lose, even if you have to
run out and buy a cdrom burner to do that.
- Posted by Arno Wagner on July 26th, 2003
Previously extreme <extreme@iinet.net.au> wrote:
The secort is not fixed. Rather another one is used that was
designated as "spare" before. This si a pretty standard process
today. The same happens when you read a bad sector until it was
read correct once (sometimes possible). The bad sectyor will
seemingly be gone afterwards, simply because the disk knew to
move the data to a spare sector when it was read correctly, but
wrong before.
The sapre sectors are not visible, that is why disk-size stays
unchanged. The only problem with this mechanism is that if
you had secred data in that bad sector you can now only delete it
by physical destruction (melting the platers, dissolving
them in acid, using a belt-sander on them, etc.)
Arno
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- Posted by Folkert Rienstra on July 26th, 2003
"Arno Wagner" <me@privacy.net> wrote in message news:bftvm4$hllg9$1@ID-2964.news.uni-berlin.de...
Nope, it can just as well be fixed.
- Posted by Rod Speed on July 26th, 2003
extreme <extreme@iinet.net.au> wrote in message
news:3f22ca2e$0$23589$5a62ac22@freenews.iinet.net. au...
Varys with the drive model.
Yep, that too.
Nope, thats when it starts to see reduced size. But if you
are getting that many bads, the drive is dying anyway.
- Posted by Folkert Rienstra on July 26th, 2003
"extreme" <extreme@iinet.net.au> wrote in message news:3f22340f$0$23608$5a62ac22@freenews.iinet.net. au...
Could be as simple as to write data to it that is correctly written where
before it was not. Or the drive performs a writecheck and decides to
reallocate the sector to a spare sector.
That is what the word implies implies but the harddrive has no (optical)
means to detect that. So it uses the Error Correction Code mechanism to
detect a bad sector. However, that ECC can be written bad or not writ-
ten at all in some cases, making the drive seemingly have a bad sector.
That's why they are called "spares".
- Posted by Arno Wagner on July 28th, 2003
Previously extreme <extreme@iinet.net.au> wrote:
It depends and size, technology and manufacturer.
Exactly. From then on bad sectors will stay bad.
Arno
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For email address: lastname AT tik DOT ee DOT ethz DOT ch
GnuPG: ID:1E25338F FP:0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
"The more corrupt the state, the more numerous the laws" - Tacitus
- Posted by Folkert Rienstra on July 28th, 2003
"Arno Wagner" <me@privacy.net> wrote in message news:bg1soo$jonfc$2@ID-2964.news.uni-berlin.de
Unless they return to good status without reallocation.
Probably not though, given the state it must be in.
