• After downloading the installer, connect the USB flash drive or other volume you're using for the bootable installer. Make sure that it has at least 12GB of available storage and is. • Open Terminal, which is in the Utilities folder of your Applications folder. • Type or paste one of the following commands in Terminal. These assume that the installer is still in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. After, follow these steps to use it. • Connect the bootable installer to a compatible Mac. Apple address book app.

Click “Create Installer.” When it’s done, insert your USB drive into any Mac, then launch the installer by holding down the Option key when you boot up your computer. Make sure that the Mac OS installer file is present in your /Applications folder. If it's not there, or you're not sure of its name, seethe previous section of this guide for details on the installer file name, and how to download the needed file. Plug your USB flash drive into your Mac. Check the flash drive's content.

• Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from it. Your Mac will start up to. Learn about, including what to do. • Choose your language, if prompted.

Runs on MS Excel Spreadsheets Because our Simple Accounting Software program is an Excel spreadsheet, there is no additional software to set up.

• A bootable installer doesn't download macOS from the Internet, but it does require the Internet to get information specific to your Mac model, such as firmware updates. If you need to connect to a Wi-Fi network, use the Wi-Fi menu in the menu bar. • Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions. For more information about the createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter this path in Terminal: Mojave: /Applications/Install macOS Mojave.app/Contents/Resources/createinstallmedia High Sierra: /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia Sierra: /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia El Capitan: /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia.

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!

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). 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. Someone had reported that the method for using DISKPART did not work, but I have done this twice and it works remarkably well, and it's the only method I could find to create a Mac-Bootable Flash. I've been trying to post this to confirm that it works for some time, I just hope it helps someone else, because it is a very easy solution. Here are the Diskpart commands used to prep the Flash Drive, just to have them here in case my Link does not work: diskpart DISKPART> list disk (Find the disk number) DISKPART> select disk x (from result of List Disk) Disk x is now the selected disk. DISKPART> clean DiskPart succeeded in cleaning the disk.

DISKPART> convert gpt DiskPart successfully converted the selected disk to GPT format. DISKPART> create partition primary Note: I use 'Rufus' for all other USB writing and formatting for Windows systems, it's a great app, but I had previously tried to format the drive as GPT using that, as a Fat32 partition. When I tried to inject the image, Transmac told me that the drive was 'write protected'. So basically, the USB drive cannot have any high level formatting, the Windows system should detect the drive as 'not formatted' for this to work, which it will if prepped right with Diskpart. I had this problem with a friend computer, it was an old iMac and I'll tell you it is not going to be easy.