How do I wipe my Mac and reinstall OS?
Select your startup disk on the left, then click Erase. Click the Format pop-up menu (APFS should be selected), enter a name, then click Erase. After the disk is erased, choose Disk Utility > Quit Disk Utility. In the Recovery app window, select “Reinstall macOS,” click Continue, then follow the onscreen instructions.
How do I restore my Mac to factory settings?
The best way to restore your Mac to factory settings is to erase your hard drive and reinstall macOS. After macOS installation is complete, the Mac restarts to a setup assistant that asks you to choose a country or region. To leave the Mac in an out-of-box state, don’t continue setup.
Does reinstalling Mac delete everything?
Reinstalling Mac OSX by booting into the Rescue drive partition (hold Cmd-R at boot) and selecting “Reinstall Mac OS” does not delete anything. It overwrites all system files in-place, but retains all your files and most preferences.
What’s the difference between Apfs and Mac OS Extended?
APFS, or “Apple File System,” is one of the new features in macOS High Sierra. … Mac OS Extended, also known as HFS Plus or HFS+, is the file system used on all Macs from 1998 until now. On macOS High Sierra, it’s used on all mechanical and hybrid drives, and older versions of macOS used it by default for all drives.
Do Macs have System Restore?
Related. Unfortunately, Mac does not provide a system restore option like its Windows counterpart. However, if you are using Mac OS X as well as an external drive or AirPort Time Capsule, a built-in back up feature called Time Machine may help you achieve your ends.
How do I restore factory settings on my MacBook air?
How to reset a MacBook Air or MacBook Pro
- Hold down the Command and R keys on the keyboard and turn on the Mac. …
- Select your language and continue.
- Choose Disk Utility and click continue.
- Choose your startup disk (named Macintosh HD by default) from the sidebar and click the Erase button.
Will reinstalling macOS fix problems?
However, reinstalling OS X isn’t a universal balm that fixes all hardware and software errors. If your iMac has contracted a virus, or a system file that was installed by an application “goes rogue” from data corruption, reinstalling OS X likely won’t solve the problem, and you’ll be back to square one.
Will reinstalling macOS get rid of malware?
While instructions are available to remove the latest malware threats for OS X, some may choose to simply reinstall OS X and start from a clean slate. … By doing this you can at least quarantine any malware files found.
What happens if you reinstall macOS?
It does exactly what it says it does–reinstalls macOS itself. It only touches operating system files that are there in a default configuration, so any preference files, documents and applications that are either changed or not there in the default installer are simply left alone.
Should I use Mac OS Extended Journaled?
Here’s a basic rundown of which format we recommend for your USB flash drive, broken down by use case. If you absolutely, positively will only be working with Macs and no other system, ever: Use Mac OS Extended (Journaled). If you need to transfer files larger than 4 GB between Macs and PCs: Use exFAT.
What is the best format for Mac hard drive?
If you need to format a drive, use the APFS or Mac OS Extended (Journaled) format for best performance. If your Mac is running macOS Mojave or later, use the APFS format. When you format a drive, any data on the volume is deleted, so make sure you create a backup if you want to keep the data.
Is exFAT slower than Mac OS Extended?
Our IT guy always told us to format our hdd storage drives as Mac osx journaled (case sensitive) because the exfat read/write speeds much slower than osx. … ExFat is fine for a backup, for moving around stuff or a flash/transfer drive. However it is not recommended for editing or long term storage.