How to use Windows to create a bootable Mac OS X 10.10 (Yosemite) USB flash drive? From the Apple app store on my external drive, but I don’t know how to create a bootable flash drive to clean install the OS. Is it possible or not? Macos mac boot macbook osx-yosemite. A USB flash drive with at least 8GB of storage (16GB is recommended.
Further Reading Apple hasn’t shipped operating systems on physical media, but there are still good reasons to want a reliable old USB stick for macOS Mojave. Luckily, it's not hard to make one—either with a handy graphical user interface or some light Terminal use. Here's what you need to get started. A Mac that you have administrator access to. We've created Mojave USB stick from both High Sierra and Mojave, but your experience with other versions may vary. An 8GB or larger USB flash drive or an 8GB or larger partition on some other kind of external drive. A USB 3.0 drive will make things significantly faster, but an older USB 2.0 drive will work in a pinch.
The macOS 10.14 Mojave installer from the Mac App Store in your Applications folder. The installer will delete itself when you install the operating system, but it can be re-downloaded if necessary. If you want a GUI, take a look at. There are other apps out there that do this, but this one is quick and simple. If you want to use this USB installer with newer Macs as they are released, you'll want to periodically re-download new Mojave installers and make new install drives periodically.
Apple rolls support for newer hardware into new macOS point releases as they come out, so this will help keep your install drive as universal and versatile as possible. There's also one new consideration for newer Macs with —as of this writing, the i. Among this chip's many security features is one that disallows booting from external drives by default.
To re-enable this feature, hold down Command-R while your Mac reboots to go into Recovery Mode, and use the to 'allow booting from external media.' If you're trying to install an older version of macOS, you may also need to go from Full Security to Medium Security to enable booting, but if you're just trying to install the current version of macOS, the Full Security option should be just fine. The easy way. Andrew Cunningham Once you've obtained all of the necessary materials, connect the USB drive to your Mac and launch the Install Disk Creator.
This app is basically just a GUI wrapper for the terminal command, so it should be possible to make install disks for versions of macOS going all the way back to Lion. In any case, it will work just fine for our purposes. Install Disk Creator will automatically detect macOS installers on your drive and suggest one for you, displaying its icon along with its path. You can navigate to a different one if you want, and you can also pick from among all the storage devices and volumes currently connected to your Mac through the drop-down menu at the top of the window. Once you're ready to go, click 'Create Installer' and wait.
A progress bar across the bottom of the app will tell you how far you have to go, and a pop-up notification will let you know when the process is done. This should only take a few minutes on a USB 3.0 flash drive in a modern Mac, though using USB 2.0 or other interfaces will slow things down. The only slightly less-easy way The Install Disk Creator is just a wrapper for the terminal command to create macOS install disks, so if you’re comfortable formatting your USB drive yourself and opening a Terminal window, it’s almost as easy to do it this way. Assuming that you have the macOS Mojave installer in your Applications folder and you have a Mac OS Extended (Journaled)-formatted USB drive (which is to say, HFS+ and notAPFS) named 'Untitled' mounted on the system, you can create a Mojave install drive using the following command. Sudo '/Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia' -volume /Volumes/Untitled -nointeraction -downloadassets The command will erase the disk and copy the install files over. Give it some time, and your volume will soon be loaded up with not just the macOS installer but also that may come in handy if your hard drive dies and you're away from an Internet connection. If you’d like to create an install drive for a macOS version other than Mojave, just tweak the paths above to refer to Sierra or High Sierra instead.
Whichever method you use, you should be able to boot from your new USB drive either by changing the default Startup Disk in System Preferences or by holding down the Option key at boot and selecting the drive. Once booted, you'll be able to install or upgrade Mojave as you normally would. You can also use Safari, Disk Utility, or Time Machine from the recovery partition to restore backups or troubleshoot.
It can be installed without an optical drive. (Note that more recent Macs with OS 10.7 or later may not run the Snow Leopard Installer. If that is the case, try option 3 below.) To install Snow Leopard on older Mac (but with Intel processor): 1) use a spare USB flash drive (at least 8GB in size that will be reformatted and erased) and a second Mac with an optical drive, or 2) have Mac to be upgraded connected to a Local Area Network with another Mac (or Windows XP PC) that does have an optical drive. Option 1 (easiest): 1) Use Disk Utility to reformat the USB drive as 'Mac OS Extended (Journaled)' with the GUID partition option (if available. More recent versions of Disk Utility automatically do the GUID partition option). 2) On a Mac with working optical drive, use Disk Utility to RESTORE the DVD to the USB flash drive. 3) Connect USB flash drive to Mac to be upgraded.
Restart Mac and hold option key. Select 'Snow Leopard DVD' (which is now the name of USB flash drive).
4) Follow installation instructions. Option 2 (more hassle than it may be worth): The Snow Leopard DVD has 'Remote Install OS X' software on it for remote install.
Place DVD in optical drive of a Mac or Windows XP PC on same network as Mac to receive Snow Leopard. Find the software and follow the instructions. Option 3 (if Snow Leopard installer will not run on Mac because Mac is too new): (This requires another older Intel-based Mac that is able to run the installer.) Create a small partition (at least 12GB) that is formatted as 'Mac OS Extended (Journaled)' with the GUID partition option (partition can be on an external drive or USB flash drive). Install Snow Leopard to the partition. Use Disk Utility to make DMG image of partition OR move external/USB drive to newer Mac. If DMG image was created, copy to newer Mac, and restore DMG to a partition on newer Mac.
Restart Mac, hold option key, and select partition with Snow Leopard. Answered by Ewald W from Vancouver. Feb 3, 2016.
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