I only have the Lion Installer from the Mac App store with the InstallESD.dmgon a backup. I'm not able to install Lion! I do not have any install DVD (for any Mac OS). Having restarted the installation, I keep getting the same message! I've tried different partition layouts (always HFS+ with GUID): I formatted the SSD using the same Lion install USB. Restart Installation.īut I did not restart immediately, since I wanted to format my whole SSD with the Disk Utiliy (which went fine). This solution should be more convinient than the official soluion, since the Lion software would not have to be downloaded again. Restore the InstallESD.dmg onto the HFS+ formatted USB (GUID). Open the package contents of the Lion installer from the Mac App store to get the InstallESD.dmg. There are many (inofficial) workarounds: Since they are all the same, I'm sure that you're familiar with it: This is not good, since the offical Lion recovery disk assistant ( ) is only able to create a recovery USB with an existing Recovery HD on the mac. This thread focuses on OS X Mountain Lion. When I installed Lion, the install of a recovery partition failed. OS X Mountain Lion on Unsupported Macs macOS Extractor, OS X Patcher, and MacPostFactor are apps that guide you through patching and installing OS X El Capitan (10.11), Yosemite (10.10), Mavericks (10.9), or Mountain Lion (10.8) on your older Mac. I have a serious problem that I need help with. 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. The process copies the InstallESD.dmg image to the USB stick, verifies it and completes. 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. Here you'll find the InstallESD.dmg inside the ShareSupport folder. Inside the Contents folder you will find a SharedSupport folder.

Lion usb installer