Hit “ Restore” to write the image on to the partition. Drag and drop the Mac OS partition from the left side list under the USB flash drive (in my case “ Mountain Lion“) on to the “ Destination” box. Now, the “ Source” box will be populated with “ Mac OS X Install ESD“.
![how to create a mountain lion install disk how to create a mountain lion install disk](https://cdn.arstechnica.net/wp-content/uploads/2012/07/Screen-Shot-2012-07-25-at-8.36.43-AM.png)
The name of the mounted Volume would be like “ Mac OS X Install ESD” and it would be sitting in the Disk Utility.Ĭlick on it from Disk Utility and hit “ Restore” tab. Double click on “ InstallESD.dmg” to mount it. Open “ Contents -> SharedSupport” folder. Right click on it and select “ Show Package Contents” from the pop-up menu. To do that go to “ /Applications” folder. Once you downloaded Mountain Lion for installation from “ Mac App Store“, get the “ InstallESD.dmg“. Prepare MOUNTAIN LION installation boot volume: Name: DataStorage, Format: ExFAT, Size: 17GBĪfter editing the partitions click on “ Apply” to create the partitions.Name: FEDORA17, Format: MS-DOS (FAT), Size: 5GB.Name: WIN8PROWMC, Format: MS-DOS (FAT), Size: 5GB.Name: Mountain Lion, Format: Mac OS Extended (Jounaled), Size: 5GB.Note: To boot from a Mac machine it is important that the Hard drive’s or USB flash drive’s “ Partition Map Scheme” must be “ GUID Partition Table”. Now click on “ Options…” found below “ Partition Layout” and select “ GUID Partition Table” and click “ OK”. Select the number of partitions you want to make from the “ Partition Layout” drop down menu (In my case I opted for 4 partitions). Select the USB flash drive and click on “ Partition” tab. The respective Operating Systems’ ISO/DMG files.A USB flash drive with size, say above 8, 16, 32GB or whatever that suits your needs.In all cases a simple “ cp -R” command does the trick to prepare the bootable volumes.Mine is MacBook Pro 17″ (3.1, late 2007 with 64 bit EFI).
HOW TO CREATE A MOUNTAIN LION INSTALL DISK HOW TO
This write-up is about how to prepare multiboot installation USB flash drive on Mac OS for the purpose of booting uniquely from Intel Mac machines.
![how to create a mountain lion install disk how to create a mountain lion install disk](https://assets.hongkiat.com/uploads/clean-install-mountain-lion/mountain-lion-installer.jpg)
For 32 bit platforms it could be the same or may be even much easier.