Per aiutare a spiegare cosa significano i numeri qui è un estratto dall'articolo Wikipedia SMART :
Conteggio dei settori riallocati (Reallocs):
Count of reallocated sectors. When the hard drive finds a read/write/verification error, it marks that sector as "reallocated" and transfers data to a special reserved area (spare area). This process is also known as remapping, and reallocated sectors are called "remaps". The raw value normally represents a count of the bad sectors that have been found and remapped. Thus, the higher the attribute value, the more sectors the drive has had to reallocate. This allows a drive with bad sectors to continue operation; however, a drive which has had any reallocations at all is significantly more likely to fail in the near future. While primarily used as a metric of the life expectancy of the drive, this number also affects performance. As the count of reallocated sectors increases, the read/write speed tends to become worse because the drive head is forced to seek to the reserved area whenever a remap is accessed. If sequential access speed is critical, the remapped sectors can be manually marked as bad blocks in the file system in order to prevent their use.
Conteggio settori in sospeso:
Count of "unstable" sectors (waiting to be remapped, because of unrecoverable read errors). If an unstable sector is subsequently read successfully, the sector is remapped and this value is decreased. Read errors on a sector will not remap the sector immediately (since the correct value cannot be read and so the value to remap is not known, and also it might become readable later); instead, the drive firmware remembers that the sector needs to be remapped, and will remap it the next time it's written. However some drives will not immediately remap such sectors when written; instead the drive will first attempt to write to the problem sector and if the write operation is successful then the sector will be marked good (in this case, the "Reallocation Event Count" (0xC4) will not be increased). This is a serious shortcoming, for if such a drive contains marginal sectors that consistently fail only after some time has passed following a successful write operation, then the drive will never remap these problem sectors.
Un numero elevato di realloc o di settori in attesa suggeriscono che l'unità non funziona e che potrebbe essere necessario riparare o sostituire l'iPod.
Il tuo Pending Sector Count è ok ma il tuo Reallocated Sectors Count è estremamente alto. Di solito un settore contiene 512 byte. I realloc 16376 significano che già 8 MB sono stati riallocati.
Il mio iPod classic di 4 anni ha ancora solo 0 realloc e 0 settori in attesa.
Anche se non sono stato in grado di trovare alcuna informazione sul numero di settori sparsi sugli HDD, dubito che il tuo iPod Classic ne abbia ancora. Probabilmente hai alcuni blocchi difettosi (insostituibili) che rendono il tuo iPod inutilizzabile.