Disk images are their full copies, presented as a file. Typically, the information stored in it can be compressed to save space. There are several options for solving this problem.
Instructions
Step 1
One of the ways in which you can compress a disk image is to use an archiver program. The most common ones are WinRAR and 7-Zip. Download one from https://www.rarlab.com or https://www.7-zip.org respectively. They are freeware (WinRAR is shareware). You can also use any other archiver at your own discretion.
Step 2
Start WinRAR. Use the program's built-in file manager to find the disk image you want to compress. Select it, then select "Commands" -> "Add files to archive" in the menu, or click on the "Add" button on the toolbar, or press the Alt + A key combination.
Step 3
In the window that appears, specify the settings for the archive being created. Write its name, select the desired compression format (ZIP or RAR), specify the compression method. You can also specify additional settings, if required. After that, click OK and wait until the process of creating the archive is completed.
Step 4
The sequence of actions in the 7-Zip program is the same. The same applies to other archiving programs.
Step 5
The second method is to save the disk image in ISZ (Zipped ISO Disk Image) format. Files in this format are compressed disk images. ISZ was developed by ESB Systems. To save the desired disk image in this format, use a program from the same company called UltraISO.
Step 6
Select "File" -> "Open" from the menu. In the file manager that appears, find the required disk image, select it and click the "Open" button. After that select "File" -> "Save As". In the window that appears, specify a name and select the.isz format from the list, and then click the "Save" button. Wait for the process to finish.
