If you have a Mac and want to manage your hard drive or external drives, you can use the built-in Disk Utility software. However, Disk Utility can not only manage your disks and other storage spaces, but also create disk images. A disk image can be used to save and encrypt documents. To create disk images with Disk Utility, you should know the respective use, choose the format of the disk image and create it.
Steps
Part 1 of 3: Knowing the Use of a Disc Image
Step 1. Secure your data
There are various ways to create a disk image; for example to secure data. If you have sensitive information, this method allows you to encrypt it and load it onto a disk to protect it.
Step 2. Load from hard drive
Another advantage of the disc image is the ability to load it onto a CD or DVD.
In other words, you can transfer the image contained on the disc to CD. This way, you don't have to find the disk again
Part 2 of 3: Choose a Specific Format
Step 1. Open Disk Utility
Go to Applications and click on the “Utilities” folder.
Step 2. Click on “New Image”
Step 3. Manage the image
A window will open with the following options:
- Name: the name that your saved image will have.
- Size: A new disk image will certainly need a certain size. You can choose between various values or enter one of your choice.
- Volume format: if you need the disk image to be in a particular format, you can change it; otherwise it is highly recommended to leave the default one.
- Encryption: You have 2 options to choose from.
- Partitions: in this option, you can choose whether to create a DVD / CD image, a normal image or a specific one for the operating system.
- Image format: it is recommended to stick to the default one, unless you have a clear idea of what to do.
Part 3 of 3: Creating the Disc Image
Step 1. Click on “Create”
Once you have completed the options, click on the "Create" button at the bottom of the window.
Step 2. Add files
When you're done, Disk Utility will automatically load the new image onto your desktop, ready to accommodate more files.
Step 3. Eject the uploaded image
When you have added everything to the disk image, you can drag it to the trash to eject it.
