18.01.2007 17:17
[#1]
LowLevelFormat
Czy jest dostąpna ta przydatna funkcja na MOS-ie? Na Ami bardzo mi się przydawało a w Mosie niby jest ale nie działa.
19.01.2007 21:30
[#10]
Re: LowLevelFormat
@Arbuz, post #4
Ja bym takiego dysku nie używał. Szkoda moich nerwów i czasu. Co jak co ale przy dzisiejszych cenach dysków można zafundować sobie komfort psychiczny i kupić coś nowego. Przecież to grosze kosztuje i jeszcze ma dwa lata gwarancji. No ale to zależy kto co lubi. Są tacy co lubią się bać. :)
20.01.2007 11:14
[#12]
Re: LowLevelFormat
@MDW, post #10
Być może i tak ale żaden z dysków po tych operacjach nie padł. A przeważnie robiłem o dla kolegów Grzybiarzy tzn. format Low Level na Ami potem pełen format w FFS-ie i do Grzyba a tam twardy jak nowy. Bez Low Level ale z samym ffs-em bad blocki były. 8 na 10 dysków dało radę naprawić
20.01.2007 11:32
[#13]
Re: LowLevelFormat
@cholok, post #11
Z tego co pamietam (ale moge zle pamietac) low level format polegal na tym ze zapisywalo sie 1 bajt, odczytywalo i porownywalo, zapisywalo sie na tym samym miejscu inny bajt, odczytywalo i porownywalo i tak jeszcze 2 razy, jesli byly bledy to sektor szedl do tablicy uszkodzonych sektorow, a jesli nie to byl zerowany. Raczej tak dzialaja obecnie programy dostarczane czasem przez producentow sprzetu (ale z zaznaczeniem: "use at your own risk" ). Sama operacja jest niemal identyczna jak low level format wykonywany przez starsze dyski po dostarczeniu odpowiedniej komendy, dlatego napisalem ze sformatowac mozna.
20.01.2007 15:25
[#15]
Re: LowLevelFormat
@cholok, post #14
Błąd 404-to ma mi coś wyjaśnić ?
Jak już powiedziałem low level formatting tools są dostępne przez większosć producentów sprzętu, a czym to się różni od standardowego formatowania też wyjaśniłem (czyli że czyści każdy sektor i dodatkowo go testuje)...w porównaniu z high level fomatem który tylko czyści tablicę zajętości (tablicę plików) a sektory zostawia nienaruszone...czyli low level format jest dalej obecny w swiecie komputerowym wbrew temu co bylo gloszone kilka postow wczesniej.
Jak już powiedziałem low level formatting tools są dostępne przez większosć producentów sprzętu, a czym to się różni od standardowego formatowania też wyjaśniłem (czyli że czyści każdy sektor i dodatkowo go testuje)...w porównaniu z high level fomatem który tylko czyści tablicę zajętości (tablicę plików) a sektory zostawia nienaruszone...czyli low level format jest dalej obecny w swiecie komputerowym wbrew temu co bylo gloszone kilka postow wczesniej.
20.01.2007 16:21
[#16]
Re: LowLevelFormat
@abcdef, post #15
Po co to te nerwy.
Ze strony samsunga:
Jan 20,2000 Low-level format tool(Clearhdd.exe)
Question
I am getting errors when trying to format a samsung drive
during high level formatting.
Is there a low level utility that I can download?
Answer
You cannot format the disk drive at low level.
The servo, sector layout and defect management information
contained in the low level format is designed to last
the life of the drive.
As such, this information cannot be overwritten
outside of the factory.
But we will attach a file which makes a hdd the same status
as that of when you purchase a hdd newly,
that is, status of no data and status to be formatted newly.
Ze strony pcguide:
Low-level formatting is the process of outlining the positions of the tracks and sectors on the hard disk, and writing the control structures that define where the tracks and sectors are. This is often called a "true" formatting operation, because it really creates the physical format that defines where the data is stored on the disk. The first time that a low-level format ("LLF") is performed on a hard disk, the disk's platters start out empty. That's the last time the platters will be empty for the life of the drive. If an LLF is done on a disk with data on it already, the data is permanently erased (save heroic data recovery measures which are sometimes possible).
If you've explored other areas of this material describing hard disks, you have learned that modern hard disks are much more precisely designed and built, and much more complicated than older disks. Older disks had the same number of sectors per track, and did not use dedicated controllers. It was necessary for the external controller to do the low-level format, and quite easy to describe the geometry of the drive to the controller so it could do the LLF. Newer disks use many complex internal structures, including zoned bit recording to put more sectors on the outer tracks than the inner ones, and embedded servo data to control the head actuator. They also transparently map out bad sectors. Due to this complexity, all modern hard disks are low-level formatted at the factory for the life of the drive. There's no way for the PC to do an LLF on a modern IDE/ATA or SCSI hard disk, and there's no reason to try to do so.
Older drives needed to be re-low-level-formatted occasionally because of the thermal expansion problems associated with using stepper motor actuators. Over time, the tracks on the platters would move relative to where the heads expected them to be, and errors would result. These could be corrected by doing a low-level format, rewriting the tracks in the new positions that the stepper motor moved the heads to. This is totally unnecessary with modern voice-coil-actuated hard disks.
Warning: You should never attempt to do a low-level format on an IDE/ATA or SCSI hard disk. Do not try to use BIOS-based low-level formatting tools on these newer drives. It's unlikely that you will damage anything if you try to do this (since the drive controller is programmed to ignore any such LLF attempts), but at best you will be wasting your time. A modern disk can usually be restored to "like-new" condition by using a zero-fill utility.
Wnioski:
Nazwa lf istnieje nadal ale oznacza całkiem coś innego niż kiedyś.
Ze strony samsunga:
Jan 20,2000 Low-level format tool(Clearhdd.exe)
Question
I am getting errors when trying to format a samsung drive
during high level formatting.
Is there a low level utility that I can download?
Answer
You cannot format the disk drive at low level.
The servo, sector layout and defect management information
contained in the low level format is designed to last
the life of the drive.
As such, this information cannot be overwritten
outside of the factory.
But we will attach a file which makes a hdd the same status
as that of when you purchase a hdd newly,
that is, status of no data and status to be formatted newly.
Ze strony pcguide:
Low-level formatting is the process of outlining the positions of the tracks and sectors on the hard disk, and writing the control structures that define where the tracks and sectors are. This is often called a "true" formatting operation, because it really creates the physical format that defines where the data is stored on the disk. The first time that a low-level format ("LLF") is performed on a hard disk, the disk's platters start out empty. That's the last time the platters will be empty for the life of the drive. If an LLF is done on a disk with data on it already, the data is permanently erased (save heroic data recovery measures which are sometimes possible).
If you've explored other areas of this material describing hard disks, you have learned that modern hard disks are much more precisely designed and built, and much more complicated than older disks. Older disks had the same number of sectors per track, and did not use dedicated controllers. It was necessary for the external controller to do the low-level format, and quite easy to describe the geometry of the drive to the controller so it could do the LLF. Newer disks use many complex internal structures, including zoned bit recording to put more sectors on the outer tracks than the inner ones, and embedded servo data to control the head actuator. They also transparently map out bad sectors. Due to this complexity, all modern hard disks are low-level formatted at the factory for the life of the drive. There's no way for the PC to do an LLF on a modern IDE/ATA or SCSI hard disk, and there's no reason to try to do so.
Older drives needed to be re-low-level-formatted occasionally because of the thermal expansion problems associated with using stepper motor actuators. Over time, the tracks on the platters would move relative to where the heads expected them to be, and errors would result. These could be corrected by doing a low-level format, rewriting the tracks in the new positions that the stepper motor moved the heads to. This is totally unnecessary with modern voice-coil-actuated hard disks.
Warning: You should never attempt to do a low-level format on an IDE/ATA or SCSI hard disk. Do not try to use BIOS-based low-level formatting tools on these newer drives. It's unlikely that you will damage anything if you try to do this (since the drive controller is programmed to ignore any such LLF attempts), but at best you will be wasting your time. A modern disk can usually be restored to "like-new" condition by using a zero-fill utility.
Wnioski:
Nazwa lf istnieje nadal ale oznacza całkiem coś innego niż kiedyś.
20.01.2007 16:43
[#17]
Re: LowLevelFormat
@abcdef, post #13
wiesz, ja korzystalem z opcji lowlevel format do zmiany formatu bajtów na blok (sprzętowego) dla dysków scsi programem scsitool (dla dosa). Miałem pare dysków sformatowanych na 514 b/b (specjalny tryb dla macierzy) a chcialem tradycyjny 512. Wtedy lowlevel format sie przydał.
