Download apple mac os clean install file

 · A clean install of osx. I have just purchase a used A MBP without the original dvd's. I believe I can buy a copy of SnowLeopard, erase the HD and reinstall OSX to bring it back to factory condition. I have searched the net and seen that people have 2 disks (from factory), 1 with the OSX and the other has apps and drivers.  · Install older OS X onto an external drive. The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks. Start your Mac holding down Command + R. Prepare a clean external drive (at least 10 GB of storage). Within OS X Utilities, choose Reinstall OS X. Select external drive as a source. Enter your Apple ID.  · The basic steps: System backup and cleanup → Download the installer → Write the installer onto the USB → Erase current macOS → Install the macOS from USB. The initial system checkup. If your Mac is not compatible with Monterey, it will tell right away. But for simplicity, your MacBook should be at least from and younger.

My 15" MacBook Pro hdd completely died. I have file backups so no worries there. I bought a gb ssd for a pc I had but I thought may as well put it in the mac (it's brand new), and want to know if there's anyway to clean install a new OS from scratch. Some Mac users choose to perform a clean install of each major new version of Mac OS, erasing their drive and starting over. Here's a step-by-step guide to performing a clean install of newest macOS Mojave using a bootable USB drive without losing your data. Steps to clean install Big Sur. Once you've decided to start anew with macOS Big Sur, you're only six steps from achieving your goal. Make sure you follow all of the steps and have a safe experience. Step 1: Remove all the junk. When we say that clean installation removes everything from your Mac, we forget one important detail — a backup.

Install older OS X onto an external drive. The following method allows you to download Mac OS X Lion, Mountain Lion, and Mavericks. Start your Mac holding down Command + R. Prepare a clean external drive (at least 10 GB of storage). Within OS X Utilities, choose Reinstall OS X. Select external drive as a source. Enter your Apple ID. Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions. Learn more A bootable installer doesn't download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model. Step 2b: Get the install file for an older version of macOS. For older versions of macOS and Mac OS X it's a bit more difficult to get the install file: Apple doesn't offer downloads of outdated.