TuneUp Utilities - 2011 User Manual download pdf (Page 81)

Normal vs. Thorough Analysis

Normal analysis

Normal analysis takes approx. 1-2 minutes and is generally sufficient.

Normal analysis is carried out in several phases. The table below shows explanations of all possible steps

(only the first three lines are performed during the normal analysis).

Thorough Analysis

Thorough analysis covers all of the steps of the normal analysis. In addition, it checks your drives for phys-

ical defects.

Storage space on drives is divided into "sectors", each of which is usually 512 bytes in size. In order to detect

physical defects on a drive, the thorough analysis checks each of these sectors.

The length of this analysis depends on several factors, including the size of the drive and the degree of frag-

mentation. 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)

Every element in the file system is checked. The program ensures that the structures of all files

and folders are correct.

Checking

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.

Checking

security

descriptors

(NTFS

only)

Files and folders in the NTFS file system are usually protected by security descriptors that pre-

vent access by unauthorized users. During analysis, errors in these descriptions are found and

corrected.

Thorough analysis only

Checking

file data

(NTFS

only)

All sectors of the drive that currently contain data will be checked. This ensures 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 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.

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