Mountain Lion Bootable Usb. Disk utility will now create a bootable os x mountain lion installer drive out of usb drive using the disk image this can take a little while depending on how fast the drive and mac are but 20 30 minutes isn t unusual. From linux you can read and write apple compatible hfs disk images.
Confirm that the usb drive will lose it s data and enter the admin password when asked. Open the file in the applications folder and make a bootable usb thumb drive as set out make a bootable mac os x 10 7 lion installer from a usb flash drive of course if you have an external drive cloned from the internal formatting and installing lion. Disk utility will now create a bootable os x mountain lion installer drive out of usb drive using the disk image this can take a little while depending on how fast the drive and mac are but 20 30 minutes isn t unusual.
Open poweriso and continue unregistered.
First make sure your usb drive is formatted for use with a mac then download the os x lion installer from the app store and copy it to your flash drive. For example if you want to install mountain lion on multiple macs a bootable install drive can be more convenient than downloading or copying the entire mountain lion installer to each computer. This process has a few steps. Disk utility will now create a bootable os x mountain lion installer drive out of usb drive using the disk image this can take a little while depending on how fast the drive and mac are but 20 30 minutes isn t unusual.