![]() The charge is for the new USB Drive the time to pre-install the OS X installer on it, plus post sales support and postage/packaging. No charge is being made for the system software itself. Important Notice: This Apple OS X software is FREE to download from the Apple App store using the App Store program supplied by Apple starting with OS10.6 (Snow Leopard). As soon as you hear the startup chime press and hold the option key on your keyboard. Installation Instructions:Insert the USB in your USB Slot. Please be patient and allow the process plenty of time to finish. You will see faster boot speeds using the USB installer compared to a DVD installer disc.This USB can be used to install a clean copy of Apple Mac OS X Mountain Lion 10.8 or to update your existing system to Mac Os x Mountain Lion 10.8 Installing, Recovering or upgrading your software from a USB is NOT a quick process and can take 30-45 minutes to complete. Click on the OS X installer USB drive and the system will boot using the USB stick. A screen will appear asking you which volume you would like to boot the system from. To boot from the USB device, simply hold down the Option key while your Mac is booting up. The bootable USB device will be created and a progress bar will show the current status of the operation at the bottom of the screen.ġ0 ) When the operation is complete, you can verify that the flash drive is now bootable by selecting it and clicking the Info button in the upper left corner of the Disk Utility window. You will be prompted to enter the admin password for your Mac and the process will begin. Click Restore and confirm the dialog informing you the volume will be erased. If it isn’t, simply click and drag the volume from the list at the left into the destination area. ![]() In the Destination area, make sure that the USB device’s name is showing. Select the disk image InstallESD.dmg and click open (you may also drag-and-drop the disk image into the Source area). ![]() In the Source area click the Image… button. This volume will have the name of the device you set in the previous step. Click the Partition button to continue.ĩ) Click on the newly created volume listed under the USB device on the left. A warning will pop-up asking if you are sure you want to partition the media. When you have finished, click the Apply button to format the USB device. Insure that Format is set to Mac OS X Extended (Journaled). You may now name the device in the Name textbox. This will allow the Mac boot from the drive. Select GUID Partition Table and click OK. Using the drop-down menu for Volume Scheme, choose 1 Partition as the partition scheme.Ĩ) Highlight the partition by clicking on it in the space it is shown below the Volume Scheme drop-down and then click on Options underneath it. Confirm the dialog ensuring that you want to erase the device and all information on it.ħ) Select the Partition tab on the top right. Then ensure that the Format drop-down menu is set to Mac OS Extended (Journaled) and click the Erase button. ![]() To do so, simply click and drag the file to the desired location while holding down the Option key.ĥ) Plug in the flash drive and launch Disk Utility (/Applications/Utilities).Ħ) Make sure the flash drive is properly formatted highlighting the flash drive at the left (make sure to select the device and not the volume shown under it) and clicking the Erase tab across the top right. To create your own bootable USB device using your own flash drive (note that the device must be at least 8GB or larger), follow the instructions below.ġ) Download OSX Moutain Lion from the App Store It will be downloaded to your Applications folder.Ģ) Right click on “Install Mac OS X Mountain Lion” installer and choose the option to “Show Package Contents”ģ) Inside the Contents folder, you will find a SharedSupport folder and inside the SharedSupport folder you will find the InstallESD.dmg. This is the 10.8 Mountain Lion boot disc image.Ĥ) Copy InstallESD.dmg to another folder like the Desktop. You can easily create a bootable Mac OS X 10.8 Mountain Lion installer flash drive using the instructions below. ![]()
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