The OS X Recovery Disk Assistant lets you create OS X Recovery on an external drive that has all of the same capabilities as the built-in OS X Recovery: reinstall Lion or Mountain Lion, repair the disk using Disk Utility, restore from a Time Machine backup, or browse the web with Safari. After creating the bootable installer, follow these steps to use it. Connect the bootable installer to a compatible Mac. Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from it.

1. Mac Os X Bootable Usb

There are generally four ways to create a disk image on an OS X box: • Disk Utility - The on-screen prompts will guide you, but it will by default create a.dmg, which is an OS X-specific file format. Disk Utility will also create an ISO (.cdr extension) if you select the 'CD/DVD Master' option before creating the image. You can rename the extension (to.iso) after creation if desired. • Roxio Toast - The de facto third-party standard in creating optical media on Mac OS for over a decade, it will create almost any CD or DVD format you want. • The hdiutil command-line utility, which will, in fact, create every format that Toast supports, for free, though it is far less pretty. If you want to create an ISO with this tool, use hdiutil makehybrid -iso -joliet -o Image.iso /input_path • There is a fourth, extremely direct command-line way using dd that sysadmins might know: dd if=/dev/disk1 of=Image.iso.

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Mac Os X Bootable Usb

As mentioned in other answers you can use Disk Utility or dd to create an ISO image of the original disc. But if the disc is copy protected, it contains decryption keys in the lead-in area of the disc which cannot be read directly, and are not part of the ISO image. So if you burn a new disc with this image it will not play on a standard DVD player. Nevertheless, you can play it using a program like VLC which doesn't need the keys, since it is able to circumvent the encryption. If you want a program that will copy the disc to the hard drive and also remove the copy protection so that you can burn it to a new unprotected disc, will do that, but it looks like it hasn't been updated in a while. (Only a PowerPC version is listed.) For storing on your hard drive you might find it more useful to transcode the content to unencrypted H.264 using. This will save you a lot of disk space compared to storing the MPEG-2 content that is used on DVD-Video discs.