- #Mac os x startup disk usb how to#
- #Mac os x startup disk usb mac os x#
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In the info window, expand the Sharing & Permissions: section.Mounting the USB flash drive on the desktop, right click and select "Get Info".The "missing step", after ensuring the USB flash drive is formatted correctly, is to ignore ownership For this reason, you will need to enable it before/after completing the process described by Apple, MacWorld and others using the "createinstallmedia" command in the Terminal window. Complicating matters, the USB flash drive default may disable boot support.
#Mac os x startup disk usb how to#
Most of the guides, including Apple's own support doc on how to create a bootable Mac OS installer on USB - as of this date - fail to mention the ownership step.įirst and foremost, the USB flash drive must support ownership functionality. From there, select the USB drive partition and press enter to initiate the boot process.It may be that boot-up from the USB flash drive is "prohibited" because your USB flash drive requires adjustment to the "ownership" settings. Simply insert your drive, power on the computer, and hold down the Option key to access the boot selection menu. The process has become a bit more cumbersome, but once all the files are in their proper place, the USB drive works much the same. There you have it - a bootable copy OS X Mavericks on USB Flash Drive that can be used to install, upgrade, and/or troubleshoot compatible Apple computers.
#Mac os x startup disk usb install#
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Upon completion of the USB formatting, locate Install Mac OS X Mavericks.app (downloaded in step #1 to the Applications folder, by default).Launch the Terminal.app by selecting it from the /Applications | Utilities folder and execute the following command ( Figure C)*:.Click on the Options button, select the radio button for GUID Partition Table, and click OK ( Figure B).Select Mac OS Extended (Journaled) for the format-type from the drop-down menu ( Figure A).Click the drop-down menu, selecting 1 partition.Click on the USB drive from the left-hand menu and select the Partition tab.Insert the USB drive into the Mac and launch Disk Utility.