My MBA 2012 with OS X 10.9.4 Mavericks won't boot anymore - it simply freezes after the initial jingle. I already tried resetting NVRAM and SMC, but to no avail. I don't have any time machine backups. However, I still have a disc image of Mavericks sitting on an external hard drive, a USB stick and access to a notebook with Windows 7.

I haven't yet found any tutorial on how to create a bootable USB drive on Windows in order to reinstall OS X on my beloved Macbook Air. Any help would be greatly appreciated! Microsoft Office Clip Art Pack Download. According to the first answer here,, there's a tool with a free trial called TransMac that can do it. Just make sure the USB drive is formatted with GPT and not MBR. What might be easier, however, is that that model has support for Internet Recovery. If you boot holding Command-R and you have a WiFi connection, it can actually boot into recovery mode without a recovery partition on a drive (or even without a working drive).

Jul 21, 2011 Apple doesn't sell Lion on a disk or flash drive, which doesn't give you much of an option to perform a clean install. In this video, I show you exactly. Tech — How to make your own bootable OS X 10.11 El Capitan USB install drive Setting up lots of Macs? Want an offline installer? Here's how to roll your own. These instructions will guide you to quickly make a bootable USB installation media. A Mac OS X bootable USB on. That comes with Mac OSX ready to install.

Sep 30, 2015 Many Mac users like to make a bootable installer drive for installing OS X El Capitan, whether for performing a clean install, or for making it easier to.

Having said that, your description of a crash right after the boot chime could signify a more serious hardware problem and you may not be able to boot anything. If you boot holding the option key down, the startup disk selection screen should appear.

If it crashes anyways, you may be looking at a hardware problem. I know this question is old but it is still valid. I was never able to write a Mac installer image to my Flash Drive and have it bootable, unless I did it on a Mac. Using Michael D. Dryden's, I was able to use the Diskpart command to clean and prep a GPT partition on a flash drive for an OSX Mavericks install image. I used TransMac on Windows 7 to restore the image file I had to the Flash Drive, it created a bootable Mac image on my flash drive.