If you’ve ever had to reinstall OS X, chances are you’ve used the Apple-provided system installer disc that came with the Mac. But what do you do if you misplace the DVD, or it becomes unreadable, or worse—your SuperDrive isn’t working? Having a backup of your system installer disc could save your bacon. Instead of simply copying the system installer to another disc, you can create a USB flash drive installer similar to the one provided with the latest. You’ll get an installer that won’t scratch, is easier to transport, and considerably faster than an optical disc. We found the install time decreased by 33 percent when using the flash drive method.
Creating a bootable drive for your Mac certainly seems to be a wise decision to make. Even though MacOS recovery partition can take care of all your You now have a bootable copy of the MacOS Sierra installer, and you can use it on multiple Macs to install the Mac OS. If you are familiar with the. To create your own bootable USB device using your own flash drive (note that the device must be at least 4GB or larger), follow the instructions below. 1) Purchase and download Lion from the Mac.
The process of creating a flash drive system installer is simple. You’ll need the original installation disc, a working DVD drive, and a flash drive with a minimum of 8GB of storage capacity for Snow Leopard (or 9GB if using Leopard, since it calculates file sizes differently). Any data you have on the flash drive will be erased during the process, so back up anything on there that’s important to you. Note that this article covers versions of Mac OS X Prior to Lion (Mac OS X 10.7). We also have.
When Disk Utility is finished, the flash drive should mount, and you should see the OS X install window appear. Just to make sure it’s bootable, eject the install disc, but leave the flash drive installer plugged in.
Restart your computer while holding down the Option button on your keyboard. You should see two choices to boot from: the hard drive and the Mac OS X Install disc (the icon will be of a USB device). Select the USB drive icon, and wait. If you’re greeted by the select a language screen at the beginning of the OS X install process, congrats—you now have a working flash drive installer of OS X.