3rd party apps will need to be re-downloaded if you didn't keep a copy of the original. Mac App Store apps can be re-downloaded and installed via the App Store. If you select the recovery drive you will have the option to reformat the HD and reinstall macOS, so creating a USB installer is not really needed although it comes in handy if you want to install another OS version and possibly when replacing the HD with another one.ģ) Apps are preferably installed the same way as you originally installed them. You can check for it by holding down the Alt (= Opt) key during boot until you get a list of boot-able drives, it will probably be something like "Macintosh HD" and "Recovery - 10.12" (10.12 being the version number for Sierra).
Clean install mac os sierra lifehacker trial#
Thank you for reading.ġ) You could use something like Carbon Copy Cloner (costs money but has a free trial period) to create a bootable clone of your HD to another backup drive.Ģ) If you already have Sierra installed then there should be a recovery partition with Sierra. I work on an on-call basis and have small children who love to interrupt so I need a better sense of what's ahead and whether this is even something I should try given the circumstances. I would appreciate any advice or insights you can share about the process. I'm worried about spending days getting everything back in service. How do I get everything back on the HD? And how much of my settings/preferences will I end up copying from my previous drive vs redoing? The thought of getting everything working again is. How long does a clean install take approximately?ģ) re-install apps and files: this is especially intimidating to me.
Clean install mac os sierra lifehacker software#
The last time I did anything like this was MANY OS ago, and my HD had a lot less content (currently at about 1/2 a Tb).ġ) backup: I assume I'm basically carbon copying the whole drive, right? I think I need to back up not just my files/media but apps as well? Is there existing software to manage this? Approximately how long might it take to clone 500 Gb over USB?Ģ) wipe and install seems straightforward enough although I have not yet created a bootable drive to run this step. But it's gotten very slow lately (so very many infuriating rainbow pinwheels), and I am tempted but also intimidated by a clean install and how much downtime I might be dealing with. I've had an iMac since 2012 and have steadily upgraded the OS as new releases became available.
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