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For Mac OS X 10.4 Tiger and Mac OS X 10.5 Leopard, use TinkerTool Classic Generation 2. How-To How to create a bootable USB macOS installer Make a macOS installer with createinstallmedia and install Monterey, the latest beta, or any macOS on multiple Macs, or do a clean install. We’ve compiled a list of the most commonly asked questions we get, and the answers to them: The tool will never change anything in the operating system. If possible, upgrade it to Lion, restart, and use Recovery HD to erase, or use one of the other options above. Every 2008 and later MacBook Pro and MacBook can install Mac OS X 10.7 Lion, which should be able to install the Recovery partition. She tried to use the Recovery HD startup (holding down Command-R after restarting) and had no luck. IMac models released starting in 2010 can use Internet Recovery, but first have to be upgraded at least to Lion and some need a firmware update installed, so that’s not the simplest path to pursue.Ī related question came in from Becky Steinke, who was trying to erase a 2008 MacBook. All versions after Snow Leopard include and will install Recovery HD, from which you can then boot and run

Snow Leopard with the Mac App Store installed should let you download at no cost a later version of OS X. Booting off that drive will also allow erasing via Disk Utility. Install OSX on an external drive or borrow one with OS X installed. The Mac to erase mounts as a drive, and Disk Utility can be used with it. With two Macs that both have Thunderbolt or FireWire ports, connect them with the appropriate cable, andįollow Apple’s instructions (either hold down the T key after restarting the one to erase or use Startup Disk on that computer before restarting it).

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