WinRar allows you to define volume sizes for compressing large files and/or folders. This makes it easy to split the compressed files to preset volume sizes for burning onto CD or DVD. You can even create custom volume sizes to meet any other size requirements that you might run into.
1. Click the Start button and select All Programs.
2. Select the WinRar directory and click WinRar to launch the application.
3. Click Options and select Settings.
4. Select the Compression tab.
5. From the volume size list section, click the Define volume sizes button.
6. Under Predefined sizes, use the checkboxes to select the desired volume sizes. Choices are 3.5" floppy, 100 MB Zip disk, 650 MB CD, 700 MB CD, 4482 MB DVD+R, 4488 MB DVD-R and 8152 MB DVD+R DL. Make sure to only check the ones you will use, uncheck the rest of them to keep your list nice and small. To create custom volume sizes, go to the User defined sizes section. Input a descriptive label and then the size (in bytes) in the corresponding textboxes. You can add up to 4 custom volume sizes.
7. Click OK.
8. Click OK to close the Settings window.
