How to reformat mac os x 10.7


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Either because there is no data to read, or the data that is there is corrupted. In this case, reboot your Mac and hold down Command and R immediately following the start-up chime. Your Mac will then try to connect to the internet so that it can download the OS X Utilities back to the hard drive. In the case of operating systems including and preceding OS X In this case, reboot and hold down C immediately following the start-up chime.

If you are selling, or passing on your Mac to a friend or family member, it is a really nice touch to have the Mac ready to boot into the OS X set up for the first time just like it did when you bought it. Following the downloading and installation of OS X, simply close down your Mac. The next time it is booted up, it will go straight into the set up routine and ask the new user for their AppleID s in order to set up the Mac for their use.

I explained the differences between versions of OS X including and up to Whilst it is not normally necessary to reformat the hard drive and reinstall OS X from scratch, knowing how to if you need to, or if you want to, can be extremely useful. Especially if you are selling or passing on your Mac to someone else. Save Now. Subscribe Sign In. Web Design. Game Development. Computer Skills.

Learning Guides. Business Computer Skills. The Reasons for Reformatting There may be times that you do wish to start again, from scratch. Backup, Backup, Backup Your Data! Johnny Winter.

Reinstalling Lion

Feed Like Follow Weekly email summary. Powered by. Looking for something to help kick start your next project? Envato Market has a range of items for sale to help get you started. PowerPoint Templates. Unlike with prior releases of OS X, Apple has taken a few different turns with Lion, especially in how it will be distributed to users.

In addition, the system requirements for the upgrade are going to be a bit more constrained than in the past, so here is how to best prepare for the upgrade.

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The first thing to do is ensure your system will run it. These include the following systems:. If you have purchased your system in or later, then you should be good to go for upgrading to OS X Lion; however, you can check for the processor type on your system by going to the Apple menu, selecting "About This Mac," and then looking at the Processor section.

If you have a current OS X installation, unlike previous releases of OS X, Lion will not be able to upgrade from all of them; its requirement for the latest version of the Apple Store application will require you to have the latest OS X This means that if you are running any version of Tiger or Leopard on an Intel Mac and wish to upgrade, then you must first purchase and install Snow Leopard, and then upgrade it. Apple still provides OS X Snow Leopard upgrade kits for people running Tiger and Leopard, so if you have not yet upgraded to Snow Leopard and are considering the move to Lion, then now might be a good time to purchase a Snow Leopard upgrade; however, after installing it you should consider the following before immediately moving to Lion:.

Check for PowerPC use Snow Leopard and prior versions of OS X have included the "Rosetta" translator that allowed older PowerPC code to run on Intel Macs; however, this will no longer be available in Lion so be sure to check for any programs you use that are PowerPC-based, and upgrade them, find alternatives, or simply understand that they will no longer run in Lion.

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You can check for PowerPC applications on your system by using the System Profiler utility see how to do this here. Clear up any existing problems If your system is running slowly or having stability issues, you might consider addressing these before upgrading. A basic step you can take is to run a general maintenance routine , but in addition you might consider uninstalling system add-ons that you don't use, and otherwise slimming down your system. Any program that persistently runs in the background system monitors, notification tools, and communications tools, etc.

Upgrade your applications Check for updates to any software you have running on your system, and install them if they are available. Developers will likely be releasing compatibility tweaks and updates to their software to ensure that they run in Lion, so if you use third-party utilities and programs, be sure to regularly check for updates to them in the upcoming weeks before and after Lion is released. You could also create a Time Machine backup, but I wouldn't do a full restore later—just pick and choose things you want back after a fresh install—otherwise it could run just as sluggishly or erratic as it did before.

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.

In El Capitan, after you select the Erase tab, a pop up will appear with the details. Keep the default settings and select Erase. Click the Reinstall OS X option in the menu and proceed to follow the directions.


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You will need to be connected to the Internet, so make sure you're plugged in via Ethernet, or are connected to a Wi-Fi network. You should now have a fresh copy of Mac OS X installed, and your computer is back to its factory settings.

ARCHIVED: How do I install OS X 10.7 (Lion)?

All without the need for a recovery disc or thumb drive. Thank you, a friend asked me to get a new install OS X and this seems easy, but just one question. It's downloading a fresh copy from Apple's servers. Apple OS's are now free, so they're not too concerned about verifying. Thank you for the steps, i was wondering, we need to be connected to the internet as it will download the osx again?

I'm currently running the new Yosemite. Ugh how frustrating I backed up my files and was already to go and restarted twice and could not get this menu to come up Is this not possible on Snow Leopard? This only works for Lion and higher.

How do I install OS X (Lion)?

If my computer originally came with Snow Leopard but has since been upgraded to Mavericks, will I be able to do the factory reset back to Mavericks? Or will it revert all the way back to Snow Leopard, requiring the discs? Yes, it should work just fine. Lion through El Capitan has the Recovery built-in, and it will reinstall OS X using whatever current version you are on. If not, you might need to download the firmware to use the Internet Recovery version, but this installs whatever was originally on the computer, so you'd have to update your OS again from the Mac App Store.

Everything works fine up until the last step after entering my ID and Password Try again later. My hard drive crashed on my Imac took it to computer repair they installed new hard drive, tried to recover data but could not, when we presented the imac to the apple store they told me i would have to buy back my old hd from them um hello no way, so thats why we went to another place that works on macs, so apple said i had lion on the mac, i couldnt remeber but now i remember i had leopard, the computer place installed lion, well now I cannot get any of my programs installed from the dics i have, like my photo software, etc, any cd i put in stays in for a minute then pops back out.

I turn on the computer, hold the command and r keys for 15 sec. Oh the joy of reading Service currently not available when it tries to download Mavericks online and all the while having only windows computer working. My late Mac Pro would not boot this AM. Would not let me reinstall OS X.

How to do a Clean Install of Mac OS X 10.7 Lion From a Boot Disk

Would any think it is more than a bad internal drive 1? I pulled the drive 1 out, checked all the pins and reinstalled into its slot firmly. It goes to grey screen and first tone There is not the "Reinstall the OS X" in my computer. Why not?

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