my macbook has 10.5 but came without disks trying to use a 10.4 macbook disk does not boot from disk, just views it on pressing 'alt' at statup If you sell or give away your Mac. The OS X Mountain Lion splash screen appears. I love my Mac devices. However, you can uninstall and reinstall Mac OS X without having to wipe your drive. Ideally, when you sell a Mac (pre-Lion OS 10.7), you should include Apple installer disks for the OS with it: the original disks that came with the machine, if you still have them, and also any disk for subsequent upgrades. In this case you will see this: Arriving at this point you need to select not your MacintoshHD but the one on the right instead which is the image of your Mac. I followed steps to reformat the hard drive, but cannot get the mac to start in recovery mode to reinstall the OS X 10.5.8. It’s commonplace today to have a completely legal installation of Windows without original installation media. Upon installing OS X Lion, it automatically creates a 650 MB sized recovery partition called “Recovery HD”, a new feature that lets you repair disks or reinstall OS X Lion without … Click on Reinstall macOS (or Reinstall OS X where applicable) to reinstall the operating system that came with your Mac. There are a few reasons why you might want to reinstall macOS (or even Mac OS X). Once you have the original install back on there, you can buy an upgrade to the latest version (10.8) through the App Store if … Has your Mac computer been running into issues lately? Steps to Reinstall Mac OS Using Recovery Mode. This process is actually straightforward and simple. The first step on how to reinstall Mac OS in recovery mode is to once again access macOS Utilities. If you still have worries, back up your Mac in advance or recover the lost files with EaseUS Data Recovery Wizard. While the startup disc is waking up, hold down the Command+R keys simultaneously. How to Reinstall OS using restore disc on Mac I am using MAC OS installed on my Mini computer, it is being infected with some kind of persistent malware. I don’t want my files to be removed so I want to reinstall macOS Sierra without losing data.What I want is a simple reinstall of the … This brings up a list of partitions available for you to boot from, one of which is the new “Mac OS X Recovery” partition created by Lion when it’s originally installed. I recently installed the macOS Sierra on my MacBook Pro but it looks like it’s having problems. Here’s how to install (or reinstall) OS X, step by step: Boot from your Recovery HD partition by restarting your Mac while holding down the cmd+R keys. OS X Lion 10.7 comes with a completely new interface and introduces over 250 new features to offer an amazing experience on a Mac. One great and handy new feature integrated to Lion is ‘Lion Recovery’. Click Continue. Warning: Make sure you do a full backup of your files before you reinstall your … Shift+Alt+Cmd+R : For the internet reinstall but the problem still persists ; The solution for me was to restart the Mac just pushing Alt. how to reinstall apple mac os x without correct version disk? To recover a Lion installation, and do a clean install or reinstall, you simply reboot while holding the option key. This also acts as … If you do buy either replacement Leopard disks for that machine, if available, or a retail Snow Leopard … Once you've installed the fresh operating system, you can transfer your documents, movies and music on your own time without worrying about external hard drives. Instead of running Disc Utility, you can select “Reinstall macOS” right off the bat. How to Reinstall / Reformat Mac OS X without Recovery Disk or DVD Drive Step 1: Create a backup of all your files This is the most important thing to do before you start the reformat process. Here’s how to reinstall your Mac operating system(OS). But they’re also what you do if something really bad happens to the copy of OS X that you boot your Mac from, or if the version of OS X on your Mac … Restart your Mac. Choose Reinstall Mac OS X from the Mac OS X Utilities menu. If the system was made in the past couple of years, then you'll be able to hold Cmd-Opt-R at the boot chime to get into Internet Recovery. The following instructions do triple duty: Of course they’re what you do to install OS X for the first time on a Mac or a freshly formatted hard or solid-state disk. To reinstall macOS, including the latest Mojave, without losing data, you can follow the professional guide to update the OS, which will not cause data loss in most of the case. In this video I show you how to reinstall MAC OS X on your apple computer. Select Reinstall OS X, and click Continue. When I boot from the Install Disc 1, I get the window where I need to choose a language, then a "preparing installation" message, followed by an "Alert This … This can cause some panic when you’re later instructed to make sure you have media ready before installing some other software or hardware, or if you ever need to reinstall your system from scratch. Step 4: Reinstall a clean Mac operating system. This will let you reinstall the original version of OS X. The OS X Utilities window appears. How to reinstall Mac OS X on an older Mac without Recovery mode As we mentioned above, if your Mac is running Snow Leopard or older, it won't have a Recovery partiton. Instructions on how to install macOS on a new hard drive without a USB install key or install CD. It might be time to give it a fresh OS (operating system) installation. It's possible in Mac OS X to reinstall or upgrade without losing any other existing user data on the system. I can't reinstall mac os. 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