c.) Bitte mit Spinright keine Sektoren korrigieren sondern als BAD Sektor markieren lassen. Der 'korrigierte Sektor' kann beim nächsten Beschreiben oder Lesen schon hinüber sein. Die 'Reparatur' mache ich nur zum Rückgewinnen von Daten, danach wird die Festplatte neu eingerichtet.
Hallo Fritz!
Hab ich oben etwas falsch gemacht? Wie markiere den den "korrigierten" Sektor als "BAD"?
Wahrscheinlich nicht - siehe Bild
Ich wähle bei der Auswahl der Option ## 6 ## aus. (4 oder 5 ist schneller und reicht normalerweise auch aus)
Spinrite 3 - Spininfo.exe
###################################################################
Correctable Errors and Uncorrectable Errors, and ECC
###################################################################
It's a fact of life: Hard disk drives have problems with errors.
This occurs because they are engineered to deliver the absolute
maximum possible storage for the price. In the struggle to get
the storage density up, and the costs down, the tolerances and
margins for errors have been compromised. Consequently, the
brand new disk drives purchased today have a "defect list" pasted
onto them. What's more, since there's no telling just how long
this brand new drive will remain faithful, regular "backups" are
somewhat more than prudent!
To help improve the short and long-term reliability of the
overall hard disk system, a technology known as Error Correction
Code (ECC) was invented. Error correction coding adds a small
amount of extra information onto the end of each sector of stored
data. This extra ECC appendage allows a defective region, up to
11 bits in length, to be completely rebuilt if the drive is
unable to read the data correctly. Essentially, ECC allows small
hard disk read errors to be completely "corrected."
Therefore there are three possible read results:
1. A normal read without any problems.
2. An error reading a sector, but correctable with the use
of ECC.
3. A read error where the span between the first and last
wrong bits was more than 11. Therefore, ECC cannot
recover the lost information.
The first two cases yield the same result: the data is recovered.
But one of DOS's less desirable qualities is that there's no
provision in DOS for it to report that it needs to "correct" a
growing number of sectors. ECC correction is a valuable early-
warning system that could help predict a pending hard disk
failure. DOS ignores this information, whereas SpinRite uses it.
The third type of read error, the uncorrectable one, really means
that the sector could not be read successfully. This is quite
unfortunate, since it not only keeps the rest of that sector from
being read, but it also keeps the rest of the file which that
sector was in out of reach!
###################################################################
SpinRite NOW TREATS THINGS QUITE DIFFERENTLY
###################################################################
With SpinRite, the data in a sector with a correctable read error
is immediately recovered. Then SpinRite gives the spot a fresh
new low-level format, examines the disk surface underneath the
sector for any signs of a cause for the problem, and more than
likely, returns the data to its original location. This keeps the
system's active ECC correction rate low and continuously ensures
the highest possible margins against future errors.
SpinRite reads them!
No fooling. As far as is known, SpinRite is completely unique in
its ability to actually read through unreadable sectors. The
trick is to DELIBERATELY ALLOW those few bits to go uncorrected!
In this way, it is completely possible to "read around" those few
stubbornly unreadable bits, yet still read the balance of the
sector. This sure beats the famous "Abort, Retry, Ignore, Fail"
message from DOS!
When an absolutely unreadable sector is encountered, SpinRite
In this way, it is completely possible to "read around" those few
stubbornly unreadable bits, yet still read the balance of the
sector. This sure beats the famous "Abort, Retry, Ignore, Fail"
message from DOS!
When an absolutely unreadable sector is encountered, SpinRite
reads as much of the sector as possible (typically about 510
bytes out of 512). It then reports the exact file in which the
error occurred and the byte offset of the glitch from the start
of the file.
Because of these traits, SpinRite excels at maintaining hard disk
drives in a state of peak fitness and reliability, as well as in
bringing drives, which are already dead-as-doornails, back into
the land of the living.