Do you want to completely erase a Mac and reinstall its operating system? Perhaps you are about to give away this Mac. Or, perhaps your Mac is acting up and you want to start with a clean slate. Here are instructions on how you can erase the hard drive and reinstall OS X, recently renamed macOS.

• Install Os X Without Recovery Partition

It's easy to create a Mac recovery partition in every version of macOS, from Mavericks (and earlier). Go back to the main menu and choose Install OS X. The Recovery partition in Mac OS X is an important component of a system install in that it allows you to troubleshoot a computer, repair drives, restore from backups, and even reinstall Mac OS if need be.

OS X 10.7 and newer includes a feature called the Recovery Partition. This is a normally invisible part of the Mac’s hard drive. The Mac can start up from the Recovery Partition, and it can be used to erase the hard drive and then reinstall OS X onto that hard drive. Here are the steps to erase your Mac’s hard drive and then reinstall the Mac operating system onto it.

Turn on the Mac and immediately press and hold down both the Command key and the R key. This instructs the computer to startup from the Recovery Partition. Once you see the Apple logo appear in the middle of the screen you can release the Command and R keys. Your Mac is now starting up in Recovery Mode. When the Mac has completed its startup, you should see a window similar this one:. Click on Disk Utility and then click the Continue button. Click on your Mac’s internal hard drive.

It’ll be listed in the left-hand side of the Disk Utility window. Typically the hard drive is named Macintosh HD but yours could have a different name. Click the Erase button and follow the prompts to erase the hard drive. You will be warned that everything will be removed from the hard drive and that this is permanent. When you have finished erasing the hard drive, click on the Disk Utility menu and select Quit Disk Utility. You’ll be returned to the main OS X Utilities window. Click on the Wi-Fi menu icon which appears in the upper right corner of the Mac’s screen.

Select your Wi-Fi menu and, if needed, enter the password needed to connect to this wireless network. Note: An Internet connection is needed in order to verify your authorization to reinstall this particular version of the Mac operating system. Click on Reinstall OS X. If your Mac is running macOS Sierra or newer then click on Reinstall macOS. Click the Continue button and then follow the prompts to reinstall the Mac operating system.

Note: If the version of Mac operating system that you are reinstalling is newer than the version that originally came installed on this Mac then you will be prompted to enter an AppleID name and password used to purchase this newer version of OS X from the App Store. Wait for the installation to occur.

This could take around an hour or so When the installation has finished the Mac should automatically restart itself and take you to its Setup Wizard which will ask you a series of questions to guide you through initial setup of your Mac. Read more about,. Was this tip helpful?

One of the best features introduced in Lion (OS X 10.7), and available on every version of OS X since, is. The OS X installer creates an invisible, bootable, 650MB partition—a portion of a drive that the operating system treats as a separate volume—on your startup drive called Recovery HD that includes a few essential utilities for fixing problems, restoring files, browsing the Web, and even reinstalling OS X. The Lion, Mountain Lion, and Mavericks installers should automatically create the invisible Recovery HD partition the first time you install one of these operating systems. However, that. You can find out if your Mac has the Recovery HD partition—and, thus, OS X Recovery capabilities—by launching the Terminal app (in /Applications/Utilities), and then typing diskutil list and pressing Return.

Locate your Mac’s startup drive in the resulting list of volumes; if you have a Recovery HD partition, it will show up as “Recovery HD” (preceded by “AppleBoot”) just below the name of the startup drive. If you don’t see a Recovery HD partition on your Mac’s startup drive, you can’t use OS X Recovery.

The results of this diskutil list command show a drive with a Recovery HD partition (top) and a drive without (bottom). (Another situation where you may need to add a Recovery HD partition is when you have an external drive you use for and you want to enable FileVault on it—a drive must have a Recovery HD partition to use FileVault.) If you don’t have a Recovery HD partition, Apple’s official procedure for adding one is to back up your drive, erase it to make sure it’s, reinstall OS X—which should create the hidden partition—and then restore your data. But an easier approach is to use the free (more info ). This app can create the partition and even install the necessary OS X Recovery software on it. You just need to have a copy of your OS X installer—Mavericks, Mountain Lion, or Lion—on a connected drive.

Warning: Recovery Partition Creator alters your drive’s partition map, which isn’t a trivial action. Before using the utility, you must back up your drive (and test your backup). I didn’t experience any data issues when testing Recovery Partition Creator, but whenever you use a utility that works with your drive at such a low level, you want to be safe. Yet another reminder to back up your drive before proceeding. Launch Recovery Partition Creator, read the disclaimer (which also reminds you to back up your drive—you did, right?), and click OK.

You’ll then see a dialog box indicating the version of OS X installed on your Mac. Assuming it’s some version of 10.7, 10.8, or 10.9, you’ll see the message “continuing”; click OK. Next you’ll be prompted to choose the connected volume on which you want to create the recovery partition—presumably, this would be your startup drive, but you can also use Recovery Partition Creator to create the partition on a different drive. Choose the drive and click OK. Recovery Partition Creator will next check your drive for errors.

You can skip this step, but I recommend letting it continue—you don’t want a utility mucking with your drive’s partition map if the drive or its directory is having problems. You’ll then be asked to locate your OS X installer. Because Recovery Partition Creator will use the chosen installer to populate the new partition with the necessary OS X Recovery software, you’ll want to choose the installer for the version of OS X you’re running on your Mac. In other words, if your Mac is running Mavericks, you want to choose the Mavericks installer. Oddly, even though you’ve just chosen the installer, you’re asked to choose the OS version you’re going to install on the recovery partition. Click the correct version (10.7 or 10.8 is one choice, 10.9 is the other), and Recovery Partition Creator will begin repartitioning the drive and installing the necessary software.

The description here makes Recovery Partition Creator seem more complicated than it actually is. In practice, the steps are quick and mostly straightforward.

Apr 18, 2018 - Nov 02, 2013. How did you install the Office? The download link in the email. Office version you find installed? Microsoft Office Professional. Download Microsoft Office 2013 15 0 4454 10021. Tip: The most current version of Office 2013 is 15.0.4989.1000, which was released. May 9, 2018 - Download Microsoft Office 2013 15 0 4454 1002. Office 2010 Version Numbers - Hey Y'all, I just noticed that MS no longer places the Service. Download microsoft office 2013 15 0 4454 10021. Feb 12, 2017 - Download Microsoft Office 2013 15 0 4454 10021 Average ratng: 9,8/10 3993reviews. Download Microsoft Office 2013 15 0 4454 10021. Apr 3, 2018 - Nov 02, 2013. How did you install the Office? The download link in the email. Office version you find installed? Microsoft Office Professional.

However, the utility is an AppleScript-based app, which means you don’t get much feedback about what’s happening. Eventually—after a minute or so, or a few minutes, depending on the speed of your drive(s)—you’ll see an alert that the procedure was successful. (If you switched to another app to work while Recovery Partition Creator was doing its thing, this alert may be hidden behind other windows.) You can then quit the utility.

If you want to verify that Recovery Partition Creator did what it promised, you can open Terminal and repeat the diskutil list command. The drive in question should now show a Recovery HD partition. I’ve tested Recovery Partition Creator on a number of drives—for example, my iMac, which somehow never got one despite many OS X installations, and a couple backup drives for which I wanted to enable FileVault—and it’s worked well. It’s a handy tool to have around.

Install Os X Without Recovery Partition

Want to stay up to date with the latest Gems? You can follow Mac Gems. You can also.