#CREATE MAC OS X LION INSTALL DISK HOW TO#

Nice job.īased in Houston, David Martin is a technologist at BYTE. Install OS X Lion 10.7 just as you installed previous versions of OS X. Use this disk to boot any OS X 10.7 Lion compatible Mac. You never know when you'll need to do a fresh install. Now just wait for your new OS X Lion install USB stick to finish. Boot the machine holding down the option key. The process copies the InstallESD.dmg image to the USB stick, verifies it and completes. Insert the Flash Drive or DVD drive into the Mac you wish to install Lion on. If you are prompted for your user ID and password, enter them and hit OK. Once it appears on the Finder desktop, move its icon to the Disk Utility window. In Disk Utility, click the InstallESD.dmg icon.Ĭlick on the Restore tab. Drop it into the left-most windowpane inside of Disk Utility. Move the ESDInstall.dmg file from your Finder desktop to Disk Utility, as shown below.

Double-click to open it.ĭouble-click the Disk Utility icon to open it. Open the Applications folder in Finder and locate the Utilities folder. Doing so endangers the installation application. Switch to Finder and paste the file to your Desktop. Right-click the InstallESD.dmg file and hit Copy. If you backed up the installation file as instructed and don't see it here, find the backup.Īpple, which is selling a $70 USB install disk of its own in August, destroys this file at the completion of most installations. To upgrade from Mac OS X Snow Leopard 10.6, download and install Mac OS X 10.6.

#CREATE MAC OS X LION INSTALL DISK HOW TO#

Here you'll find the InstallESD.dmg inside the ShareSupport folder. If you are unable to upgrade, see How to create a bootable installer for Mac OS X Lion below. Inside the Contents folder you will find a SharedSupport folder.

Create mac os x lion install disk