Clean install mac os x from disc

Once it has downloaded, follow these steps to create a USB bootable installer. Now, ensure the USB drive is the only disk named "Untitled" connected to your Mac, and then paste the following command into the Terminal window, and press Enter: Enter it, and the command will create a bootable Sierra installer on the USB drive. The process will take a few minutes to complete, so leave it running.

Clean Install macOS Sierra on Your Mac’s Startup Drive

Restart and Install Once the USB installer has been created, restart your Mac and hold down the Option key as soon as you hear the reboot tone. Then follow these steps: Use the mouse pointer or the arrow keys on your keyboard to select the disk called "Install macOS Sierra" in the drive list that appears on the screen. When your Mac's startup disk is formatted, return to the Utilities window and select "Install macOS", choose your freshly erased startup drive when asked where to install the OS, and follow the onscreen prompts to complete the installation.

Top Rated Comments View all. If you just go and restore from time machine you defeat the purpose of clean installing. You can do a selective restore, but don't restore your settings. Many of us are. Don't like it, don't use it.

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Pretty straight forward. Recovery uses a local partition on your disk, whereas Internet Recovery loads an environment on-demand. The latter will always load one to install the original version of OS X, whereas the regular Recovery will always load the version that matches its own version. I have been advocating against it.

It is a waste of time for most users and provides no absolute benefits. I only recommend it if system configurations were changed e.

Under normal circumstances, the user never changes anything of this manually. This makes it very difficult to even break anything beyond repair. Normally, a reinstallation is enough to fix such problems, because it is effectively an overwrite anyway. This is typically what I do. That being said, how is the USB method "long and complicated" compared to doing two installations of the operating system which you do via the recovery partition method?

Thanks MR. I do love the feel of a fresh install, thankfully I don't have to do it very often anymore, unlike my WinXP days. First thing I disabled. Why do people seem to hate that there is Siri in macOS? Didn't people complain that it wasn't there for years?

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And isn't "deep integration" Apple's thing? You're being incredibly rude. Let him be who he wants to be and let it go. Everyone doesn't have to be the same or hold your beliefs. It's a shame people can treat others so poorly because they're hidden behind a computer screen. That works but is it really easier though? The local recovery partition does restore the version that you last installed. It's the Internet Recovery that installs the original version that came on your Mac. Exactly why? For me it's the opposite. Really useful for searching for files kind of related the Photos search is really nice on iOS too now.

What might be wrong? This will save a lot of hassle if there is a problem that could cause the install to fail. My lesson learned from High Sierra. I had no problems with Mojave other than the time took. I started at 10 PM and finished at 2 AM. I heard a lot of talk about that not happening with High Sierra and no mention of it leading up to Mojave, that it took me by surprise to see the change the first time I opened Disk Utility. Also the last two high Sierra updates failed. Mac is iMacPro If I do a clean install, will Migration Assistant move my applications as well as my data?

I came for expert advice on choosing to upgrade vs. The v2. My first re-installation re-attempt went off with a hitch, and operation is smooth and flawless now.

How to Clean Install Mac OS X: 7 Steps (with Pictures) - wikiHow

Were you having troubles with your current install? Then why are you blowing away that foundation? As I type this on my current machine, I am sitting on top of a single-threaded-life install that has merely been upgraded, release to release, years after years, now year after year, since the days of the first Mac OS X Further, it has simply migrated from Mac to Mac over the years, and it has even forked itself onto multiple Macs running to this day.

Do I have 17 years of cruft on board? But who cares? Hard drives are cheap. Will I do some cleanup as 32bit apps are completely deprecated in ? And, for those already typing a rebuttal, yes, I have, with pretty much every mature OS version, done benchmarks against a virgin, pristine installation; there has never been a repeatable, let alone appreciable difference in performance. The only troublemakers used to be Adobe and MS, and a couple others that married licensing to a specific Mac by serial number, or even did nasty stuff by writing licensing info to the hidden volume structure maps on a particular hard drive.

How to Perform a Clean Installation of macOS Sierra

Do upgrades occasionally bork? So, which is right for you? Frederico, makes good sense yr suggestion. Last couple in-version updates I have downlded the combo update file. If nothing else wait for at least the. I just did a clean install of So, what I used to do, was just do clean installs when it was time to upgrade. I would upgrade in place, and then do a clean install and manually migrate all my files. I hardly ever us migration assistant on my personal machines. However… is it a royal PITA? Yeah… oh, oh, yeah… So, most recently I think I went from Granted, this happened much more rapidly than it has historically.

I have a Mac and hundreds of servers connecting to my computer simultaneously as it is. And, before you finish typing your rebuttal. Hah… no… do real world testing. Benchmarks can only tell you so much. We just never see anything appreciable, let alone repeatable. I have Aura as my main SSD. I used a third party external SSD for my clone.

Neither is seen as an Apple disk. You will need to quit it at this point, we're not running it this way. Find the Mojave installer in your Applications folder and launch it. To do it, click Show All Disks and find the needed volume on the list. Finish the installation by simply following the instructions. Your OS is now ready, time to set it up. When you have the system ready, you can start filling it with applications.

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How to clean install macOS Mojave Behold, the day has come! Dark mode is finally here. Automatic desktop cleaning. Gallery View in Finder for more convenient work. Or maybe and we get you you just want that freshly-bought Mac experience again. To complete the clean install procedure, you'll need: If you plan to clean install macOS on a non-startup drive, you don't need it Go for a system cleanup and backup your data - this will allow you to easily return your Mac to the condition it was in before you installed macOS And an hour or two to spare.

How to reinstall macOS from macOS Recovery

Here's a list of Macs that can run the Mojave: Clean up your Mac Time to remove every junk-looking thing you can find — old movies and media files, apps you never use, cache and system trash, duplicate files that you accidentally copied a few times. Create a bootable macOS Mojave installer Notice: Download new macOS from the App Store. The installer will remain in your Applications folder. It will need to be at least 8GB in size. Give the USB stick a name then click Erase. Launch Terminal either by searching for it in Spotlight or navigating to the Utilities folder in Applications.

You probably remember the only difference with clean installing High Sierra is changing the name of the app. Hit Return. Type in your admin password and wait.

If you never installed macOS Sierra 10.12.4

When the process is finished, the word Done will appear in the Terminal window. You can then quit Terminal. Enjoy Mojave, good-bye High Sierra. Install Mojave Restart your Mac and hold down Command-R to boot into recovery mode. Take your bootable USB and connect it to your Mac.