When Disk Utility is finally done, you’ll have a CDR image file in the location you chose. The last thing to do is convert it to an ISO, which you can do easily with a single Terminal command.

Depending on your Mac, Disk Utility can take several minutes to create this disk image and save it for you. It's possible to make it slightly slower, too: choose the dropdown marked Encryption and ...

My hard drive only has 120GB available, so the 5TB image is resized by Disk Utility. This is only done on read/write images (click for larger view). If you want to create a disk image that is ...

IDG Disk images are automatically excluded from Time Machine backups. In order to back them up, Time Machine has to copy the disk image file. If you make any change to the contents of a disk image ...

Use a Terminal command to expand Disk Utility’s checksum options. The first of these is the hidden checksumming routines for verifying disk image files. If you have an image, especially an older ...

It won't cure all of your Mac's ills, but a quick and easy first step toward bringing a sluggish Mac back to health is using OS X's Disk Utility to repair disk permissions.

Disk Utility remains the go-to tool for handling disk images. Most of these functions remain unchanged, so you can continue to create a disk image from any folder or any selected mounted volume ...