AVG PC TuneUP 2013 PCT13N12EN003 用户手册
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PCT13N12EN003
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Storage space on drives is divided into so-called sectors, which are usually 512 bytes
in size each. In order to detect physical defects on a drive, the thorough analysis
checks the performance of each of these sectors.
in size each. In order to detect physical defects on a drive, the thorough analysis
checks the performance of each of these sectors.
The length of this analysis depends on several factors, including the size of the drive
and the degree of fragmentation. You should allow at least 5 to 20 minutes.
and the degree of fragmentation. You should allow at least 5 to 20 minutes.
The following table explains all possible steps.
Analysis step Explanation
Normal and thorough analysis
Checking files
and folders
(NTFS and FAT)
and folders
(NTFS and FAT)
Every element in the file system is checked. The program ensures
that the structures of all files and folders are correct.
that the structures of all files and folders are correct.
Checking
indexes
(NTFS only)
indexes
(NTFS only)
Indexes are references to folders in the NTFS file system. If any of
these indexes are damaged, the associated folders will not be
displayed in the file system.
If any of your files or folders have suddenly "disappeared", there is a
good chance that they will be recovered after repairing the file
system.
these indexes are damaged, the associated folders will not be
displayed in the file system.
If any of your files or folders have suddenly "disappeared", there is a
good chance that they will be recovered after repairing the file
system.
Checking
security
descriptors
(NTFS only)
security
descriptors
(NTFS only)
Files and folders in the NTFS file system are usually protected by
security descriptors that prevent access by unauthorized users.
During the analysis, errors in these descriptions are found and
corrected.
security descriptors that prevent access by unauthorized users.
During the analysis, errors in these descriptions are found and
corrected.
Only thorough analysis
Checking file
data
(NTFS only)
data
(NTFS only)
All sectors of the disk that currently contain files are checked. This
will ensure that no read errors take place when working with files, If
sectors are found that require multiple read attempts to successfully
read the data, the file data contained will be moved to a sector that
is free of errors. The sector is then marked as defective. This
prevents future problems.
will ensure that no read errors take place when working with files, If
sectors are found that require multiple read attempts to successfully
read the data, the file data contained will be moved to a sector that
is free of errors. The sector is then marked as defective. This
prevents future problems.
Checking free
disk space
(NTFS and FAT)
disk space
(NTFS and FAT)
All drive sectors that do not contain any files will be checked for
error-free readability. If errors occur during this analysis, the sector in
question will be marked as defective to prevent files from being saved
there in the future.
error-free readability. If errors occur during this analysis, the sector in
question will be marked as defective to prevent files from being saved
there in the future.