Check of a disk
- Will start the application disk Check (Start-up/programs
/ office);
- Choose disk C: in the list of disks;
- Having clicked on the button In addition, open a dialog box Additional parametres of adjustment of a disk, familiarise with the options used by the program at check of a logic structure of file system;
- Close a dialog box Additional parametres of adjustment of a disk, click on the button Cancellation;
- Establish the switch Full and click on the button Adjustment, familiarise with options and close the given dialog box click on the button Cancellation;
- Establish the switch Standard and a tag to rectify errors automatically;
- Click on the button Start and observe of a check course;
- Upon termination of check of disk C: carry out Standard check
Disk D:;
- Close the report on results of check, and then the application Check of a disk by click on the button
To close.
Defragmentation of a disk
- Will start the application a disk Defragmentation (Start-up/programs / STANDARD/office);
- Choose äåôðàãìåíòèðóåìûé a disk - Disk C:, further having clicked on the button Adjustment familiarise with defragmentation options;
- Close a window of options and click on button OK for defragmentation start;
- For descriptive reasons process press the Data button;
- In the appeared dialog box click on the button the Legend and observe of a course of a defragmentation of disk C:;
- Close the application a disk Defragmentation having clicked on the button the Exit.
Clearing of a disk
- Will start the application disk Clearing (Start-up/programs / office);
- In a dialog box a disk Choice choose disk C: also click on button OK;
- In a dialog box Clearing of a disk for (C:) consistently familiarise with options disk Clearing, In addition, Adjustment;
- In an option Adjustment establish a tag Automatically to make disk clearing at an empty seat lack on it, further click OK;
- In a dialog box Clearing of a disk for (C:) click the button Is not present.
Control questions
1) How to start office applications?
2) Than Standard check of a disk differs from Full check of a disk?
4) Appointment of the application a disk Defragmentation.
5) That such a cluster?
6) Appointment of the application disk Clearing.
Archivers.
A file archiver is a computer program that combines a number of files together into one archive file, or a series of archive files, for easier transportation or storage. Many file archivers employ Archive formats that provide lossless data compression to reduce the size of the archive which is often useful for transferring a large number of individual files over a high latency network like the Internet.
The most basic archivers just take a list of files and concatenate their contents sequentially into the archive. In addition the archive must also contain some information about at least the names and lengths of the originals, so that proper reconstruction is possible. Most archivers also store metadata about a file that the operating system provides, such as timestamps, ownership and access control.
The process of making an archive file is called archiving or packing. Reconstructing the original files from the archive is termed unarchiving, unpacking or extracting.
An archive file is a file that is composed of one or more files along with metadata that can include source volume and medium information, file directory structure, error detection and recovery information, file comments, and usually employs some form of lossless compression. Archive files may also be encrypted in part or as a whole. Archive files are used to collect multiple data files together into a single file for easier portability and storage.
Computer archive files are created by File archiver software, Optical disc authoring software, or Disk image software that uses an archive format determined by that software. The file extension or file header of the archive file are indicators of the file format used.
Archive files are sometimes accompanied by separate parity archive (PAR) files that allow for additional error detection and recovery, particularly in recovery of missing package files in a multi-file archive.
Archives can have extensions like .zip,.rar,.tar and etc.
Lossless data compression is a class of data compression algorithms that allows the exact original data to be reconstructed from the compressed data. The term lossless is in contrast to lossy data compression, which only allows an approximation of the original data to be reconstructed, in exchange for better compression rates.[citation needed]
Lossless data compression is used in many applications. For example, it is used in the popular ZIP file format and in the Unix tool gzip. It is also often used as a component within lossy data compression technologies.
Lossless compression is used when it is important that the original and the decompressed data be identical, or when no assumption can be made on whether certain deviation is uncritical. Typical examples are executable programs and source code. Some image file formats, like PNG or GIF, use only lossless compression, while others like TIFF and MNG may use either lossless or lossy methods.