2/26/2024 0 Comments Reinstall old mac os x![]() Release the keys after the computer has restarted again.įrom here you should be able to proceed with the installation of Lion with no further problems. (Mac OS X 10.2 - 10.Keep holding down the keys until the computer restarts itself again (maybe ten or fifteen seconds at most),.Hold down “Command”, “Option”, “P” and “R” on the keyboard,.Alternatively, you may want to take the opportunity to install the latest compatible version of. Its pretty simple all you need to do is select your drive, press erase and name your drive (I use the default Macintosh HD), select the format you want (. In El Capitan, Disk Utility looks slightly different, as you can see below. What Disk Utility looks like in Lion through Yosemite. After you do so, click the Reinstall macOS button and your Mac will install the closest available version of macOS to what it shipped with. Then proceed to highlight your computer's hard drive select the Erase tab, make sure OS X Extended (Journaled) is selected, then hit the Erase button. What I discovered was that the setup for Lion seems to store data in the PRAM (Parameter Random Access Memory) and if this data is corrupted or becomes stale it becomes necessary to reset it in order to undertake a successful installation. To do so, follow the steps from above but press Shift + Option + Cmd + R to boot into macOS Recovery instead. x-12,x), disabling the dedicated GPU if using a 2011 15 or 17 MacBook Pro (MacBookPro8,2/8,3, instructions to do so can be found here), or not installing. Quite non-descript and quite unhelpful and even a format and subsequent reinstall didn’t fix the problem. “There was a problem installing Mac OS X”. Another significant problem I encountered was after the initial installation, I kept encountering the error… The first one (maybe eighteen months old) went through without a hitch but the second one (which is a few years old) had all manner of problems including reading my original DVD-RW that I had burnt using the DMG file from the Mac App Store. I had a couple of MacBook Pro laptops grace my desk and I have been upgrading them to Mac OS X 10.7 (Lion).
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