How to increase the compression ratio

You will need
  • - 7-zip.
If you need to compress an entire local disk to increase its size, use the function built into the Windows Seven operating system. Open the “Start” menu and go to “Computer”. Now right click and go to "Properties".
Now check the box next to “Compress this disk to save space.” Click the "Apply" button. Wait for Windows to change the characteristics of the selected partition. This process can take a lot of time, depending on the size of the disk and the power of the computer.
The disadvantage of this method is that working with information on a compressed disk will be much slower. It is not recommended to perform a compression operation with the system partition at all. It will be much more efficient to compress individual files. Download and install the program WinRar or its new analog 7z.
Open the "My Computer" menu and go to the folder list of the desired hard disk partition.Now right-click on the file or folder you want to compress. Select the “7-zip” menu and go to the “Add to archive” option in the window that has developed.
In the new program window that opens, specify the name of the future file in the Archive menu. Select archive format. In the "Compression Level", specify the "Maximum" or "Ultra."
Now check the box next to “Compress files opened for writing”. If necessary, set a password to access the future archive. Enter the created password in the two fields of the Encryption menu. Now click the "Ok" button and wait until the process of creating the archive is completed.
Remember that the files stored in the archive, it is better to unpack before use. After creating the archive, delete the source folder or file. Note that some file types are very poorly compressed, while other formats can be reduced in size dozens of times.

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