A back up: If you are planning to wipe your Mac as part of this process - either because You'll see the OS X Utilities screen again, choose Reinstall macOS.
Click Continue to begin the process of installing or reinstalling OS X. The Yosemite software license agreement screen appears.
Read it and click Agree. A sheet drops down, asking whether you agree to the terms of the license agreement.
Choose the disk on which you want to reinstall OS X by clicking its icon once in the pane where you select a disk. A sheet asks for your Apple ID and password.
Type them in the appropriate fields; click Sign In, and your Yosemite installation or reinstallation begins.
The operating system takes 30 to 60 minutes to install, so now might be a good time to take a coffee break. When the install is finished, your Mac restarts itself.
Your Mac will reboot, and in a few moments you can begin using your new, freshly installed and goprohero5black trouble-free copy of OS X Yosemite. Verify that the correct hard drive is selected in the left column. Highlight the drive Select Partition.
Select Install OS X from the options Select your drives as the destination and install Allow time for the drive to format. Verify the drive is mounted on the Desktop. Selecting a different country will clear your cart.
Europe, Middle East, Africa. Americas AMER. It goes to grey screen and first tone There is not the "Reinstall the OS X" in my computer.
Why not? Now what can I do?
Please help me. I really need my computer for work.
Whenever I turn on my iMac, it would load up to the www.google.com account logo and shut down after a few seconds. This happened ever time i tried to turn it back on again.
I had a bit of hope but nothing ever changed so I decided to erase my disk and was immediately promoted me to restart my rsformat. When I did, it brought me a a symbol of a folder with a question mark which flashed forever.
I held the power button to turn it reformta and hit it to turn it on again while pressing command and R keys at the same time, it brings me a sign of a spinning globe that loads forever. When I restart it and immediately insert its installation DVD while pressing key C, it brings me the apple logo and stays like that for ages.
This is freaking me how to reformat osx yosemite.
I have read and tried so may solutions online but nothing has changed. Please help me with another way. If I am currently running a public beta of El Capitan, will this method still work and install after dark channel official release of El Capitan?
yosemte There's a good chance that it will re-install the public beta version, goo pro it was the most recent OS installed on your Mac. Apple suggests installing from the Mac App Store instead. Now I need to format the new HD.
Do I need a utility disk? When you see the Utilities window, you've started up from macOS Recovery.
If you need to erase your disk before installing macOS, select Disk Utility from the Utilities window, then click Continue. You probably don't need to erase, unless you're selling or giving away your Mac or have reformar issue that requires you to erase. Learn more about when and how to erase.
If your Mac restarts to a setup assistant, but you're selling or giving it away, press Command-Q to quit the assistant without completing setup. My imac has no internet connection and i could not install Yosemite from App How to reformat osx yosemite on it until now.
God bless you. Thank you!!
I was getting Undefined error: I was hoping to make myself a bootable installer of Yosemite but I cannot manage to find anywhere to download it. That is the only thing hanging up my adventure.
I'd be open to any other macOS as long as it can run the newest iTunes. I'm wary of going too high since this laptop is so old and I'm pretty new to doing my own upgrades.
Don't Miss: How to Create a Bootable Install Drive of Talk about the long way of achieving this! Very thorough tutorial but unnecessary.
Once your USB drive has been formatted add copy and paste the following into Terminal: Carry on from Step 8. Don't forget to backup! Excellent you are a life safer!
Great tutorial and thanks for your hard work and for your generosity! Please help me!
Fixing the undefined error:
News:I tried to boot into the recovery partition and I agreed to the terms and choose the option to reinstall, but then it got quiet and nothing happened.
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