Mac os x snow leopard clean install

It seems like I would need to boot into some disk utility in order to format it, but I'm not quite sure how to do that. From there you can reformat your hard disk. After doing so, quit Disk Utility and you can perform a clean install. Apparently there is also an "Erase and Install" option.

I haven't used this before myself. See more details here.

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Here's an official apple support article about all the installation options available. It occurred to me after posting this that, while your question clearly states you want to format your disk, I wanted to mention that this will erase all data on your disk, including applications and your data.

So make a backup first. Alternatively, you could just perform an "Archive and Install" which will give you a clean OS, but leave your data and applications in tact. By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. There is a "mystery" 7GB on my HD that reformat doesn't erase. Any help on this issue would be appreciated.

I would like my Snow Leopard with full internet connectivity and non-online functionality restored. Thanks in advance. Posted on Sep 6, 7: Page content loaded. Sep 6, Sep 9, Thanks for the reply. I tried your instructions. I was still unable to connect and download updates , though there was a better install of Snow Leopard than before.

Clean install of Snow Leopard?

More Less. Communities Contact Support. Sign in. Most importantly, make redundant backups. If you only have one backup, remember that when you erase your hard drive, those backups become the one-and-only copy of your data.

What you need

Before erasing the hard drive, make sure you have a minimum of two completely separate backups, on completely separate media, and preferably made with two different backup programs. I highly recommend Time Machine to back up to one hard drive or a Time Capsule, and Carbon Copy Cloner to back up to one or more additional hard drives. The system should eventually boot into the installer, where you first must choose a language. Do so, then choose Disk Utility from the Utilities menu.

When you see the Apple logo, you can let go. This will start the computer in recovery mode. Once you have fully booted into recovery mode, open Disk Utility. Note that when you begin the install process, you will need to download about 4 GB of data, so be sure your internet connection can handle that before proceeding. Once in Disk Utility, you need to select your hard drive in the list and select the Erase tab. This step is pretty simple — just follow the directions to reinstall the system on the newly-erased drive.

Instead, when the installer finishes, import nothing, and go through the setup process as if this were your first computer. Once your system restarts successfully, you will need to be sure that it is fully up-to-date. From the Apple menu, choose Software Update, and install any updates that show up. If you reinstalled Mac OS X Once your clean, new system is up and running and fully updated, work on getting all the settings back to the way you like them. At this point, you can manually copy your user data from the clone backup back into your new user folder.

When it comes to restoring data for apps that are not document-centric, like iTunes, iPhoto or Mail, you need to find and copy the data from your backup to the same location on your new drive. For other apps, you may need to search for instructions on where to find the data and preference files. At this point, you can start reinstalling any other applications you might have had installed. Do not try to copy them from your backup.

Reinstall them from the original disks, or download them from the original source. Once you have completed the seventh step, you should have your machine back to a state pretty close to where it was before, though hopefully without the issues that caused you to go to all this trouble in the first place. Is it enough to choose Erase?