26 May
1999
26 May
'99
3:20 p.m.
<> It's a foolish practice. Running Norton's diskwipe is a good thing but
a
FYI: disk wipe write a patternover the dat file to reduce it's
recoverability.
<wiping program (and *think* it is okay although not as good as doing a
<wipedisk) is to overwrite the offending file with another larger one, i.e.
Delete and format will pretty much clean the disk.
The key thing is to not leave it out in the open so to speak.
<drive, and then hit the platters with a bulk eraser. I have heard that it
Then the disk is useless and you much as well hit it with a hammer as the
positioner servo information is gone.
<is possible to recover data from the HD even after doing a wipedisk by
<removing the platters and then analyzing the platters (urban legend?)
Yes that is true but, you're taking in a lab setting with sophisticated
tools and knowledge. IE: CIA/fbi stuff.
Allison
26 May
26 May
4:14 p.m.
Allison J Parent wrote:
Delete and format will pretty much clean the disk.
I think that would depend on the platform. Hmmm, were you referring to a
low-level format vs a high leve )DOS) format?
<drive, and then hit the platters with a bulk
eraser. I have heard that it
Then the disk is useless and you much as well hit it with a hammer as the
positioner servo information is gone.
That depends on the type of drive. I have changed platters on MFM/RLL PC
drives, low level formatted the thing, and it ran without problems. Did the
same thing on an IDE drive ... that one didn't work so well afterwards :).
27 May
27 May
12:47 a.m.
On Wed, 26 May 1999, Marvin wrote:
Yes it does! Drive that use a stepper or mechanical/optical positioner
you may get away with it. Some drive the servo information is only on one
platter and as long as that one is ok no problem. Others it's embedded in
the data or between the data and degaussing it is destructive.
RLL/MFM PC is not an infomative description of any drive. RLL/MFM are
encoding methods for data. PC drive is less spcific.
I think that would depend on the platform. Hmmm, were
you referring to a
low-level format vs a high leve )DOS) format?
It does but in most cases a high level format does munge most of the data.
It may not remove all of it. In both cases (HLF or LLF) the data will
require some work to recover compared to an untouched disk.
positioner
servo information is gone.
That depends on the type of drive. I have changed platters on MFM/RLL PC drives, low level formatted the thing, and it ran
without problems. Did the
same thing on an IDE drive ... that one didn't work so well afterwards :).
FYI: most IDE drives use RLL encoding and but also use wedge or embedded
servo. Think of IDE as a old drive with the controller card burried on
it.
The servo information is drive specific usually as it placed on the
platters during drive assembly.
Allison
9342
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