Once it's done applying your changes, now click on the USB disk volume, which is nested under the disk. Make sure the format is set to Mac OS Extended (Journaled) and that Install Mac OS 9 Disk Drivers is unchecked. In the dialogue box that pops up, choose Apple Partition Map and press OK. Under the Volume Scheme dropdown, select 1 Partition. Once it's done formatting, click on the Partition tab. Uncheck the 'Install Mac OS 9 Disk Drivers' option.

In Disk Utility, select the disk (not the volume) and navigate to the Erase tab.Įnsure the Volume Format selected is Mac OS Extended (Journaled). If the Mac says 'cannot read drive', ignore and initialize it anyway Scan the DMG for restore - Images - Scan Image for Restoreįind and insert the USB you intend to use into the Mac This will prevent the 'resource busy' error when scanning. Unlock the DMG so you can scan it for restore.Ĭlick the mounted DMG's volume and click 'unmount'. Lock the DMG in Finder (Command+I, check Locked - this will prevent the Finder from writing its own metadata to the DMG that could make it unbootable) The first mirror server will likely provide the fastest download speed. You can use #31 here if you don't have a copy. NOTICE: Some models are particularly hard to get this to work on - notably the iBook series, where it worked for me on my 2005 iBook G4 exactly one time, and then it never worked again.īefore you start the restore process, here's what you'll need:Ī working Mac different from the one you will restoreĪt least 8 GB USB 2.0 (3.0 can cause problems with certain models)ĭMG of OS X Leopard - Download this to your Mac

If something's not clear please feel free to ask me. I had to combine steps from multiple guides to finally get the Mac to boot from the USB, and figured that I'd post a comprehensive guide here. I had followed many guides online but was never able to get the Mac to boot from the USB or install OS X. The iMac already came with OS X 10.5.8 installed but I wanted to do a clean install of the OS for security/performance purposes. So this all started when I got an old iMac G5 iSight model from a computer recycling store. While this guide is targeted toward Mac OS X 10.5 Leopard, it still applies to other versions of Mac OS X, including any Server versions from 10.4-10.5, and possibly 10.0-10.3 as well (although I haven’t tested that). I figured I would revive this subreddit with a working guide on how to create an OS X Leopard bootable USB for PowerPC models and actually boot the computer from it, and provide some extra tips/software suggestions.

Create snow leopard bootable usb