The best way is to use a bootable USB because it boots up faster than a DVD and there is no need for a DMG file if you make a bootable USB.īut you will have to make an iso file only for the purposes of making a bootable DVD if that is what you want. Unlike Lion and Mountain Lion, the InstallESD.dmg file is not bootable for Mavericks, and so alternative methods are required for this. dmg install file that I can use to restore a disk and create a bootable USB drive at will. Right now I have the 10.9 installer sitting on my computer, so I'm ready to do whatever I have to do to achieve my former setup for Mavericks. * Whenever I want to image a mac, I plug in an 8GB+ USB drive and use Disk Utility to format it appropriately and restore it with the InstallESD.dmg file, creating a bootable USB install drive * I have OS 10.8's InstallESD.dmg file sitting in my application installer folder What I want to achieve is the setup I have now: I would like to do the same for Mavericks but I have been unable to find directions that don't involve making a one-off bootable disk. One approach that has saved me many hours of time is that I've been keeping OS X install images on my hard drive, ready to be transformed into a bootable drive, at all times. I work in a small business where about 95% of our computers are Macs and I am the main person that maintains them.
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