


dmg installer file for OS X Lion onto a usb thumbdrive. Select the thumndrive in disk utility and then go to the ‘Edit’ Menu of Disk Utility and select ‘Restore.’ It will prompt you for a disk image. OS X Lion installation DMG (hint: file named: macosx10711a390.dmg) Mac running OS X Leopard or Snow Leopard USB Thumbdrive or Memorycard Reader w/memory card (4GB mininum, data will be destroyed).

Use Disk Utility to ‘Restore’ the dmg file to a thumb drive.

Insert the thumb drive and use disk utility to format it as Mac OS Extended (Journaled) with GUID Partition Table.Ĥ. †Open the ‘SharedSupport’ folder and find the file called “InstallESD.dmgâ€.ģ. It will look something like this:Ģ. Right-click on the installer and select “Show Package Contents. Purchase or download the OS X Installer via the App store. Mountain Lion, Yosemite, El Capitan etc. You’ll need an 8G USB thumbdrive.ġ. It uses Apple’s built-in disk utility.This works with any version of OS X. Now, download the ISO file of the Snow Leopard OS on your computer and extract the ISO file. I have written how to do this using a program called DiskMaker X, and I have written about how to do it from the command line here, but after doing this a few times I find the most reliable method is the one outlined below. It’s very handy to have a bootable version of OS X on a thumb drive. Per installare OSX Snow Leopard dal drive USB, sarà necessario riformattare il disco rigido del Mac.
