Why mechanical failure causes HDD being undetectable by bios or OS ?

  • Thread starter Thread starter andy
  • Start date Start date
andy said:
It depends what you mean saying that.
When the disk was detectable always the same data was unavailable, therefore I
assume that if only the disk could be detectable then I could recover 80% of
the data.
Click to expand...

No, the entire surface is covered with pixie dust.
Click to expand...
 
No, the entire surface is covered with pixie dust.
Click to expand...

So what. The data could not be recovered not because of bad sectors (there
were none before failure, not sure whether there are any now - not possible to
test it), but because of the bad movements of the heads, and bad spinning of
the plates.

a.
 
So what. The data could not be recovered not because of bad sectors (there
were none before failure, not sure whether there are any now - not possible to
test it), but because of the bad movements of the heads, and bad spinning of
the plates.
Click to expand...

LOL, since you seem to be an expert at it, recover the data and
then you have proof!

Your drive is dead, the data is gone... move on, you're just
wasting time now.
 
LOL, since you seem to be an expert at it, recover the data and
then you have proof!
Click to expand...

I will if you only tell me how to make the disk visible in the system.
Your drive is dead, the data is gone... move on, you're just
wasting time now.
Click to expand...

Most of the data (perhaps even all) is not gone - all plates (or most of the
plates) are not damaged, so the data are still on them and just wait to be
recovered. I will recover it if I buy another such disk model.

But in one thing you're right - I'm wasting my time talking to you. :/
Bye.

a.
 
andy said:
I will if you only tell me how to make the disk visible in the system.


Most of the data (perhaps even all) is not gone - all plates (or most of the
plates) are not damaged,
Click to expand...

WRONG, they're covered with soot and unusable.
 
andy said:
How can you be sure?
Click to expand...

The platters are moving quite fast -- thousands of RPMs. When the heads
crash they will generate generate debris above those rapidly moving
platters. Where else would those particles come to rest?
 
Grinder said:
The platters are moving quite fast -- thousands of RPMs. When the heads
crash they will generate generate debris above those rapidly moving platters.
Click to expand...
Where else would those particles come to rest?
Click to expand...

On those rapidly moving platters, right? Do you ever read your posts back?
Anywhere *except* those rapidly moving platters, of course.
They will be shot right into the casing walls where they may be swept by the
rotating air into a particle filter.

And btw, who cares what happens to the heads when you can worry about par-
ticals that escape the particle filter when they shoot off those platters, right?
 
The platters are moving quite fast -- thousands of RPMs. When the heads
crash they will generate generate debris above those rapidly moving
platters. Where else would those particles come to rest?
Click to expand...

But that still may not disable access to most of the data in a short period of
time. According to Ontrack opening a disk in ordinary conditions (which I
assume is even worse than those particles from head crash) usually shortens
life of a disk from 100 to 1000 times - it doesn't kill all data on disk
instantly.

a.
 
andy said:
andy said:
But that still may not disable access to most of the data in a short period of
time. According to Ontrack opening a disk in ordinary conditions (which I
assume is even worse than those particles from head crash) usually shortens
life of a disk from 100 to 1000 times - it doesn't kill all data on disk
instantly.
Click to expand...

That's misleading. The mean time to TOTAL failure once the lid has been
lifted is down in the hours range and can be MUCH less.
Click to expand...
Click to expand...
Click to expand...
Click to expand...
 
Clueless. Can't even setup his newsreader properly either.
Click to expand...

Go ahead wacko...pull the cover from a >=60GB HD mfg in the last 2 years and
let it sit there and run with the lid off in the average home
environment...tell us all how long it lives. While it's goin watch it
carefully...you might learn something..wear glasses.
 
Back
Top