Create bootable usb os x from dmg
Note: In versions of the Lion installer prior to 10.7.4, you didn’t need to first mount the InstallESD.dmg image-you could simply drag the image itself into the Source field.
Create bootable usb os x from dmg mac#
The restore procedure will take anywhere from five to 15 minutes, depending on your Mac and the speed of your drive.
This drive must be at least 5GB in size (an 8GB flash drive works well), and it must be formatted with a GUID Partition Table. Connect to your Mac the hard drive or flash drive you want to use for your bootable Lion installer.
Create bootable usb os x from dmg mac os x#
Drag the Mac OS X Install ESD icon into the Source field on the right (if it isn’t already there).Click Mac OS X Install ESD in Disk Utility’s sidebar, then click the Restore button in the main part of the window.The mounted volume is called Mac OS X Install ESD. This mounts the disk image’s volume in the Finder. In Disk Utility, select InstallESD.dmg in the sidebar, and then click the Open button in the toolbar.To create a bootable hard drive or flash drive I recommend a hard drive or flash drive-a DVD will work, but it takes a long time to boot and install. The next steps depend on whether you want to create a bootable hard drive or flash drive, or a bootable DVD. Right-click (or Control+click) on the Lion installer to view its contents. Drag the InstallESD.dmg disk image into Disk Utility’s left-hand sidebar.Launch Disk Utility (in /Applications/Utilities).In the folder that appears, open Contents, then open Shared Support you’ll see a disk-image file called InstallESD.dmg.Right-click (or Control+click) the installer, and choose Show Package Contents from the resulting contextual menu.It’s called Install Mac OS X Lion.app and it should have been downloaded to /Applications.
Once you’ve purchased Lion, find the Lion installer on your Mac.