In other cases, your Mac can be experiencing some major malfunctions: Often, the best option to fix these problems would be to reformat your computer and reinstall your OS, but since most of us don't plan on ever taking this drastic measure, we don't obtain a recovery disc or thumb drive.
Thankfully, the geniuses over at Apple have made the process easy for us—no need for a disc; no need for a drive—all you need is a decent internet connection. With just a few clicks of some buttons and your Mac is gonna be running like it did the day you got it. Okay, so you may have a lot of files that you want to get rid of, but you definitely have some files you want to keep. In my case, I even have programs I want to keep so I don't have to re-download them after the process is over. 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.
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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. 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.
All without the need for a recovery disc or thumb drive.
How to format a drive in Mac OS 10.6 to 10.10
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.
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. 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? 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 apple 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 computer.
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 off 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 out.
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I have read and tried so may solutions online but nothing has changed. Please help me with another way. How do I securely delete data from the machine? The Apple might also have If Apple is going to take too long to send you disks or won't, there is a option to create a image of the bad disk and burn a new one on another Mac possibly on a PC too as a ISO image.
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Sometimes when the read and burn occurs, errors are repaired and the new image will work when the old one won't. Communities Contact Support.
How to format a drive in Mac OS to | Seagate Support ASEAN
Sign in. Browse Search. Ask a question. User profile for user: How to erase and install Snow Leopard Hello and welcome to my User Tip You need to erase and install A little more preparation is in order to make sure your files work in Snow Leopard.
How to erase and install Snow Leopard 10.6
How to revert your Mac to Snow Leopard If your here because you have a problem and you think erasing and reinstalling is going to solve it, it most certainly will, but you might not need to go this far and you might want to recover data off the non-booting drive first. Step by Step to fix your Mac Create a data recovery, undelete boot drive If your here because you want to secure erase data better than writing Zero's acorss the selected hard drive or partition good enough for most folks , this tip doesn't cover that, see this one then come back here afterwards.
How do I delete data from the machine?
Use the correct Most commonly used backup methods Unmount and disconnect all other drives. No mistakes. Here we go. To erase the entire drive of all partitions: To erase just the OS X partition leaving others like Bootcamp etc. Quit Disk Utility. You will be back into the Fresh installing Snow Leopard Now for you who just erased the internal drive via the Quit Disk Utility and install Double-click the Optional Installs folder, and then double-click the Optional Installs package.
A package has an icon that looks like an open box. Select the checkbox next to Rosetta, click Continue, and then click Install. Install all third party programs from fresh original sources and compatible with Music, Pictures, Movies, Documents etc not Library to their respective folders in each account Apple support doc on installing Problems installing?
Hold the power button down to hard shutdown. Review your secure erase procedures here to make sure your not leaving data How do I securely delete data from the machine? Try to reinstall After install, just hard shutdown and it will boot to the "Welcome" video for the next owner. Advanced options 9: More Less.