Archived from groups: comp.sys.ibm.pc.hardware.storage (
More info?)
Previously Folkert Rienstra <see_reply-to@myweb.nl> wrote:
> "Eric Gisin" <ericgisin@graffiti.net> wrote in message news:conk9302a6c@enews2.newsguy.com
>> "Arno Wagner" <me@privacy.net> wrote in message news:3191kcF39e6maU1@individual.net...
>> > Previously Folkert Rienstra <see_reply-to@myweb.nl> wrote:
>> > > Clueless Arnie is at it again.
>> >
>> > > > The last disks that could low-level format themselves had one dedicated
>> > > > servo surface.
>> >
>> And they did not rewrite the servo tracks.
> Right Eric, obviously.
> Clueless Arnie not even notices how he contradicts himself in the
> same post. It's the same story all over again of people posturing
> how they prove something with one situation versus another and not
> notice how they actually prove the opposite: When it isn't necessary
> to overwrite the servos on a drive with a dedicated servo sur- face
> in order to Low Level Format it then that is actually the blatant
> -spitting in your face- proof that Servo info has nothing whatsoever
> got to do with Low Level Formatting.
Funny. You seem to have missed that there are different techologies
and configurations. Also you completely have misunderstood what a
"servo-surface" is. Not surprisiong, really.
>>
>> > > SCSI drives have zoned recording too and they can LLF just fine.
>> > > Contrary to popular belief 'modern' SCSI drives still exist.
>> >
>> > SCSI disks cannot LLF.
> Yes, they can. Anyone can look it up.
Please do so and show me.
>> > They can do a surface recertification,
> Yes Arnie, they can do that too when doing a LLF (Format Unit).
Format Unit is not necessarily a LLF, the drive is free to simulate it.
Most/all HDDs do. The only thing a HDD actually needs to do when
getting this command with the right options is a surface recertification.
However in, e.g. SCSI floppies, this command does do a LLF.
>> > but that is something else.
> Obviously. There usually is a reason why something is called like it
> is called. But straying from the subject is not the same as denying
> the subject capability. The subject is LLF, Arnie, not
> (re)certification.
And this comment is relevant how?
>> > No servo information is written in that process.
> Exactly. Yet the drive is Low Level Formatted none the less.
> Because Low Level Formatting is Low Level Formatting and
> Servo Track Writing is Servo Track Writing, nomatter how
> hard you try to call the one the other.
I think you do not understand what "low-level" means. It means
lower than just data reading/writing.
>> > Surface recertification does test all sectors for problems.
> The subject is Low Level Formatting. It's called 'Format Unit' in SCSI.
> Certification is an option of 'Format Unit'.
>> > In some drives it will also reuse sectors formerly
>> > marked as bad and reallocated if they pass the test.
> On 'some' drives, Arnie? You are just fishing, aren't you, Arnie?
No, contrary to you I have done this in different circumstances with
different hardware.
> Posturing has become second nature to you, isn't it, Arnie.
> Keeping the Grown Defect List or rebuilding the Grown Defect List
> are options to the 'Format Unit' command, Arnie. They don't just
> happen on one drive and not another, they are user decided.
> And 'passing the test' depends on whether certification is enabled.
> If not, they are just re-enabled, good or bad.
Untrue in practice. You don't understand the level of freedom the
actual implementors of the SCSI specification have.
>> >
>> Utterly clueless as usual. A LLF is the writing of sectors, not servos.
> Yup, LLF (Format Unit) formats all tracks into sectors, it doesn't write
> the tracks themselves. Tracks are defined by the servo marks which in
> turn were written by the Servo Track Writer.
LOL! Funny one! Of couse the sevo marks also define the
sectors, since they need to be between the sectors (not enough
space for servo-marks and data parallell to each other).
>> > As usual you display insights deep enough to fool most people without
>> > in-depth knowledge, but fail to truely understand the subject.
> Nice one, Arnie! Tears to my eyes.
> Have been practicing long in front of that mirror, have you, Arnie?
Not at all, since I actually understand the subject matter. Its
just your posturing that sometimes sets me off. Anyways I think
you display of lqack of manners/bad upbringing and general lack
of true insight disqualifies you for further discourse. I will
answer to you in this thread again.
Arno
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