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Your USB stick should appear as gold/yellow and labelled ‘EFI Boot’.RDR File Extension 4 Tools to Burn DMG File to USB on Windows and macOS. This will launch Apple’s ‘Startup Manager’ which shows bootable devices connected to the machine. If you want to use your USB stick with an Apple Mac, you will need to restart or power-on the Mac with the USB stick inserted while the Option/alt () key is pressed.
How to create a bootable macOS Big Sur USB install drive Step 1: Download macOS Big Sur. This option is used for all Intel-based Mac. Choose the Name as Untitled, Format as OS X Extended (Journaled) and select Scheme as GUID Partition Map. Select the USB drive and click the Erase button. Open the Disk Utility app. Command Line Method Step 1.
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Drag-and-drop the Mac OS X Install Drive disk into the Source boxCreate the bootable Windows 10 installer USB drive using the Mac OS Xs built-in Boot Camp Assistant (BCA). Make a Bootable Mac OS X Lion Installer from a USB Flash Drive Apple Footer. So, you just downloaded nearly 4GB of Mac OS X 10.7 Lion install files from the Mac App store and are wondering if you can get this onto a. Drag-and-drop the USB drive's partition into the Destination boxMac os x lion 10.7.5 bootable usb recovery upgrade fresh installation.
Select the language you'd like to use when promptedTo install OS X Snow Leopard from the USB drive, you'll need to reformat the Mac's hard drive. Select the OS X Install DVD from the boot menu using the arrow keys on the Mac's keyboard Power down the Mac and reboot while holding the Option key Using The Snow Leopard USB DriveNow that you've created a Snow Leopard USB drive, let's use it to install OS X Snow Leopard as well as access Terminal, Disk Utility, and other OS X utilities. At the bottom right-hand corner of the screen and click the Restore buttonDisk Utility will restore the OS X Install DVD or disk image to the USB drive this process may take anywhere from 20 minutes to an hour depending on how quick the Mac is.
Quit Disk Utility by pressing Command-Q on the keyboard Press the Erase button to format the Mac's hard drive Select Mac OS Extended (Journaled) from the Format drop-down menuPlease note that all data on the Mac's hard drive will be erased, so backup all important files before proceeding.

You can now use the USB drive to upgrade, maintain and restore Macs to OS X 10.6.
